CSS: Set .action navigation styles in the monitoring module

modules/monitoring/public/css/module.less

@@ -5,6 +5,13 @@
   text-align: right;
 }
 
+.actions .nav {
+  li > a,
+  li > span {
+    display: inline-block;
+  }
+}
+
 // State summary badges
 .state-badges {
   display: inline-block;

public/css/icinga/nav.less

@@ -33,13 +33,6 @@
   }
 }
 
-.content .nav {
-  li > a,
-  li > span {
-    display: inline;
-  }
-}
-
 .tab-nav {
   .clearfix();