Fix header height when announces shown

public/css/icinga/layout.less

@@ -38,9 +38,8 @@
 
 #header-logo-container {
   height: 2.667em;
-  margin-left: .7em;
+  margin: .1667em 0 .1667em .7em;
   width: 100px;
-  margin-top: 0.1667em;
 }
 
 #header-logo {

public/css/icinga/widgets.less

@@ -2,7 +2,6 @@
 
 #announcements > ul {
   background-color: @body-bg-color;
-  font-size: @font-size;
   list-style: none;
   margin: 0;
   padding: 0;
@@ -12,7 +11,7 @@
     content: "\e811";
     font-family: 'ifont';
     left: 1em;
-    margin-top: -0.8em;
+    margin-top: -1em;
     padding: 0.3em;
     position: absolute;
     text-align: center;

public/js/icinga/ui.js

@@ -579,6 +579,8 @@
                 var $search = $('#search');
                 var $sidebar = $('#sidebar');
 
+                $header.css({ height: 'auto'});
+
                 if ($layout.hasClass('minimal-layout')) {
                     if (! this.mobileMenu && $sidebar.length) {
                         $header.css({