diff --git a/.puppet/modules/icinga2/manifests/init.pp b/.puppet/modules/icinga2/manifests/init.pp
index 26c7300a5..e5b77ad75 100644
--- a/.puppet/modules/icinga2/manifests/init.pp
+++ b/.puppet/modules/icinga2/manifests/init.pp
@@ -15,7 +15,7 @@ class icinga2 {
   include icinga_packages
 
   package { [
-    'icinga2', 'icinga2-doc', 'icinga2-debuginfo'
+    'icinga2', 'icinga2-doc'
   ]:
     ensure  => latest,
     require => Class['icinga_packages'],
@@ -35,12 +35,8 @@ class icinga2 {
     links  => follow,
     owner  => 'icinga',
     group  => 'icinga',
-    mode   => 6750,
+    mode   => '6750',
   }
 
   icinga2::feature { [ 'statusdata', 'command', 'compatlog' ]: }
-
-  icinga2::feature { 'api':
-    ensure => absent,
-  }
 }
diff --git a/.puppet/modules/icingaweb2/manifests/config/general.pp b/.puppet/modules/icingaweb2/manifests/config/general.pp
index 8ccea172f..200a4f79e 100644
--- a/.puppet/modules/icingaweb2/manifests/config/general.pp
+++ b/.puppet/modules/icingaweb2/manifests/config/general.pp
@@ -10,7 +10,7 @@ define icingaweb2::config::general (
      content => template("${source}/${name}.ini.erb"),
      owner   => 'root',
      group   => $web_group,
-     mode    => 0660,
+     mode    => '0660',
      replace => $replace,
   }
 }
diff --git a/.puppet/modules/icingaweb2/manifests/config/module.pp b/.puppet/modules/icingaweb2/manifests/config/module.pp
index 19db02250..90d98d083 100644
--- a/.puppet/modules/icingaweb2/manifests/config/module.pp
+++ b/.puppet/modules/icingaweb2/manifests/config/module.pp
@@ -20,7 +20,7 @@ define icingaweb2::config::module (
      source  => "${source}/modules/${module}/${name}.ini",
      owner   => 'root',
      group   => $web_group,
-     mode    => 0660,
+     mode    => '0660',
      replace => $replace,
   }
 }
diff --git a/.puppet/modules/openldap/manifests/init.pp b/.puppet/modules/openldap/manifests/init.pp
index 069c4a157..11cc2b42a 100644
--- a/.puppet/modules/openldap/manifests/init.pp
+++ b/.puppet/modules/openldap/manifests/init.pp
@@ -20,6 +20,18 @@ class openldap {
 
   service { 'slapd':
     ensure  => running,
-    require => Package['openldap-servers']
+    require => Package['openldap-servers'],
+  }
+
+  if versioncmp($::operatingsystemmajrelease, '7') >= 0 {
+    ['core', 'cosine', 'inetorgperson', 'nis', 'misc', 'openldap'].each |String $schema| {
+      exec { "slapd-schema-${schema}":
+        command => "ldapadd -Y EXTERNAL -H ldapi:// -f /etc/openldap/schema/${schema}.ldif",
+        group   => 'root',
+        require => Package['openldap-servers'],
+        unless  => "test -n \"$(find /etc/openldap/slapd.d/cn=config/cn=schema/ -name cn={*}${schema}.ldif -print -quit)\"",
+        user    => 'root',
+      }
+    }
   }
 }
diff --git a/.puppet/modules/php/manifests/init.pp b/.puppet/modules/php/manifests/init.pp
index dd6df83b3..788ad5df1 100644
--- a/.puppet/modules/php/manifests/init.pp
+++ b/.puppet/modules/php/manifests/init.pp
@@ -20,24 +20,11 @@ class php {
 
   package { 'php':
     ensure  => latest,
-    require => Package['apache'],
-    notify  => Service['apache']
-  }
-  # TODO(el): Always executed. Should be a resource
-  -> exec { 'php-timezone':
-    command => 'sed -re $\'s#^;?(date\\.timezone =).*$#\\1 "UTC"#\' -i /etc/php.ini',
     notify  => Service['apache'],
+    require => Package['apache'],
   }
 
-  file { '/etc/php.d/error_reporting.ini':
-    content => template('php/error_reporting.ini.erb'),
+  php::phpd { ['error_reporting', 'timezone', 'xdebug_settings' ]:
     require => Package['php'],
-    notify  => Service['apache']
-  }
-
-  file { '/etc/php.d/xdebug_settings.ini':
-    content => template('php/xdebug_settings.ini.erb'),
-    require => Package['php'],
-    notify  => Service['apache']
   }
 }
diff --git a/.puppet/modules/php/manifests/phpd.pp b/.puppet/modules/php/manifests/phpd.pp
new file mode 100644
index 000000000..4d59223cb
--- /dev/null
+++ b/.puppet/modules/php/manifests/phpd.pp
@@ -0,0 +1,21 @@
+# define: php::phpd
+#
+#   Provision php.d config
+#
+# Parameters:
+#
+# Actions:
+#
+# Requires:
+#
+# Sample Usage:
+#
+define php::phpd {
+
+  include php
+
+  file { "/etc/php.d/$name.ini":
+    content => template("php/$name.ini.erb"),
+    notify  => Service['apache'],
+  }
+}
diff --git a/.puppet/modules/php/templates/timezone.ini.erb b/.puppet/modules/php/templates/timezone.ini.erb
new file mode 100644
index 000000000..51e82763b
--- /dev/null
+++ b/.puppet/modules/php/templates/timezone.ini.erb
@@ -0,0 +1 @@
+date.timezone = "UTC"
diff --git a/.puppet/profiles/icinga2_dev/manifests/init.pp b/.puppet/profiles/icinga2_dev/manifests/init.pp
index 7082fe935..322480594 100644
--- a/.puppet/profiles/icinga2_dev/manifests/init.pp
+++ b/.puppet/profiles/icinga2_dev/manifests/init.pp
@@ -19,11 +19,15 @@ class icinga2_dev {
   include monitoring_test_config
 
   icinga2::config { [
-    'conf.d/test-config', 'conf.d/commands', 'constants',
+    'conf.d/test-config', 'conf.d/commands', 'constants'
   ]:
     source => 'puppet:///modules/icinga2_dev',
   }
 
+  icinga2::feature { 'api':
+    ensure => absent,
+  }
+
   icinga2::feature { 'ido-pgsql':
     ensure  => absent,
     require => Class['icinga2_pgsql'],
diff --git a/.puppet/profiles/icingaweb2_dev/files/openldap/db.ldif b/.puppet/profiles/icingaweb2_dev/files/openldap/db.ldif
index eab9b7bac..03263f9c3 100644
--- a/.puppet/profiles/icingaweb2_dev/files/openldap/db.ldif
+++ b/.puppet/profiles/icingaweb2_dev/files/openldap/db.ldif
@@ -6,7 +6,7 @@ olcRootPW: {SSHA}N/2WMqT8q7cElh7KUQz+p9TJbjmKv/u9
 replace: olcRootDN
 olcRootDN: cn=admin,cn=config
 
-dn: olcDatabase={2}bdb,cn=config
+dn: olcDatabase={2}hdb,cn=config
 changetype: modify
 replace: olcRootPW
 olcRootPW: {SSHA}MxMpLBo2/TSymoIBf/Sb5iQac7Wwiur5
diff --git a/Vagrantfile b/Vagrantfile
index 198016789..11b5e2b9c 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -47,5 +47,6 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     puppet.module_path = [ ".puppet/modules", ".puppet/profiles" ]
     puppet.manifests_path = ".puppet/manifests"
     puppet.manifest_file = "site.pp"
+    puppet.options = "--parser=future"
   end
 end
diff --git a/library/Icinga/Data/Paginatable.php b/library/Icinga/Data/Paginatable.php
new file mode 100644
index 000000000..d9a6de397
--- /dev/null
+++ b/library/Icinga/Data/Paginatable.php
@@ -0,0 +1,9 @@
+<?php
+/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Data;
+
+use Countable;
+
+interface Paginatable extends Limitable, Countable {};
+
diff --git a/library/Icinga/Data/QueryInterface.php b/library/Icinga/Data/QueryInterface.php
index 5a6d5d5ab..6ae6c16ca 100644
--- a/library/Icinga/Data/QueryInterface.php
+++ b/library/Icinga/Data/QueryInterface.php
@@ -3,6 +3,4 @@
 
 namespace Icinga\Data;
 
-use Countable;
-
-interface QueryInterface extends Fetchable, Filterable, Limitable, Sortable, Countable {};
+interface QueryInterface extends Fetchable, Filterable, Paginatable, Sortable {};
diff --git a/library/Icinga/Exception/QueryException.php b/library/Icinga/Exception/QueryException.php
index bfe98855a..abfd7402d 100644
--- a/library/Icinga/Exception/QueryException.php
+++ b/library/Icinga/Exception/QueryException.php
@@ -4,7 +4,7 @@
 namespace Icinga\Exception;
 
 /**
- * Exception thrown if a query contains invalid parameters
+ * Exception thrown if a query encountered an error
  */
 class QueryException extends IcingaException
 {
diff --git a/library/Icinga/Web/Widget/Paginator.php b/library/Icinga/Web/Widget/Paginator.php
index dc014e371..b0c5b6c15 100644
--- a/library/Icinga/Web/Widget/Paginator.php
+++ b/library/Icinga/Web/Widget/Paginator.php
@@ -3,7 +3,7 @@
 
 namespace Icinga\Web\Widget;
 
-use Icinga\Data\QueryInterface;
+use Icinga\Data\Paginatable;
 use Icinga\Exception\ProgrammingError;
 
 /**
@@ -14,7 +14,7 @@ class Paginator extends AbstractWidget
     /**
      * The query the paginator widget is created for
      *
-     * @var QueryInterface
+     * @var Paginatable
      */
     protected $query;
 
@@ -28,11 +28,11 @@ class Paginator extends AbstractWidget
     /**
      * Set the query to create the paginator widget for
      *
-     * @param   QueryInterface      $query
+     * @param   Paginatable      $query
      *
      * @return  $this
      */
-    public function setQuery(QueryInterface $query)
+    public function setQuery(Paginatable $query)
     {
         $this->query = $query;
         return $this;
diff --git a/modules/monitoring/application/forms/Config/BackendConfigForm.php b/modules/monitoring/application/forms/Config/BackendConfigForm.php
index d2fe4e938..d5a960d20 100644
--- a/modules/monitoring/application/forms/Config/BackendConfigForm.php
+++ b/modules/monitoring/application/forms/Config/BackendConfigForm.php
@@ -312,10 +312,15 @@ class BackendConfigForm extends ConfigForm
             return false;
         }
 
-        $resourceConfig = ResourceFactory::getResourceConfig($this->getValue('resource'));
-        if (! self::isValidIdoSchema($this, $resourceConfig) || !self::isValidIdoInstance($this, $resourceConfig)) {
-            $this->addSkipValidationCheckbox();
-            return false;
+        if (($el = $this->getElement('skip_validation')) === null || false === $el->isChecked()) {
+            $resourceConfig = ResourceFactory::getResourceConfig($this->getValue('resource'));
+            if (! self::isValidIdoSchema($this, $resourceConfig) || !self::isValidIdoInstance($this, $resourceConfig)) {
+                if ($el === null) {
+                    $this->addSkipValidationCheckbox();
+                }
+
+                return false;
+            }
         }
 
         return true;
diff --git a/modules/monitoring/library/Monitoring/Backend/Ido/Query/IdoQuery.php b/modules/monitoring/library/Monitoring/Backend/Ido/Query/IdoQuery.php
index c5e9e5333..de89d23bb 100644
--- a/modules/monitoring/library/Monitoring/Backend/Ido/Query/IdoQuery.php
+++ b/modules/monitoring/library/Monitoring/Backend/Ido/Query/IdoQuery.php
@@ -12,6 +12,7 @@ use Icinga\Data\Filter\FilterExpression;
 use Icinga\Exception\IcingaException;
 use Icinga\Exception\NotImplementedError;
 use Icinga\Exception\ProgrammingError;
+use Icinga\Exception\QueryException;
 use Icinga\Web\Session;
 
 /**
@@ -855,7 +856,6 @@ abstract class IdoQuery extends DbQuery
     protected function customvarNameToTypeName($customvar)
     {
         $customvar = strtolower($customvar);
-        // TODO: Improve this:
         if (! preg_match('~^_(host|service)_([a-zA-Z0-9_]+)$~', $customvar, $m)) {
             throw new ProgrammingError(
                 'Got invalid custom var: "%s"',
@@ -870,11 +870,20 @@ abstract class IdoQuery extends DbQuery
         return array_key_exists($name, $this->joinedVirtualTables);
     }
 
+    /**
+     * Get the query column of a already joined custom variable
+     *
+     * @param   string $customvar
+     *
+     * @return  string
+     * @throws  QueryException If the custom variable has not been joined
+     */
     protected function getCustomvarColumnName($customvar)
     {
-        if (isset($this->customVars[($customvar = strtolower($customvar))])) {
-            $this->customVars[strtolower($customvar)] . '.varvalue';
+        if (! isset($this->customVars[($customvar = strtolower($customvar))])) {
+            throw new QueryException('Custom variable %s has not been joined', $customvar);
         }
+        return $this->customVars[$customvar] . '.varvalue';
     }
 
     public function aliasToColumnName($alias)
@@ -882,9 +891,19 @@ abstract class IdoQuery extends DbQuery
         return $this->idxAliasColumn[$alias];
     }
 
+    /**
+     * Get the alias of a column expression as defined in the {@link $columnMap} property.
+     *
+     * @param   string $alias Potential custom alias
+     *
+     * @return  string
+     */
     public function customAliasToAlias($alias)
     {
-        return $this->idxCustomAliases[$alias];
+        if (isset($this->idxCustomAliases[$alias])) {
+            return $this->idxCustomAliases[$alias];
+        }
+        return $alias;
     }
 
     /**