Fix regressions with page width for anon user

Author: caddoo

plugins/CoreHome/stylesheets/layout.less

@@ -183,6 +183,7 @@ ul.browser-default {
   .layoutWithSidebar {
     display: flex;
     flex-direction: column;
+    width: 100%;
   }
 
   & .top_controls {
@@ -222,6 +223,13 @@ ul.browser-default {
       display: flex;
       flex-direction: row;
       align-items: stretch;
+      width: 100%;
+
+      .page > .pageWrap > #content.home,
+      .page > .pageWrap > #content.admin {
+        display: block;
+        width: 100%;
+      }
 
       #secondNavBar {
         flex: 0 0 224px;