Return nothing when toPlaceholder filter is used.
Added replace closing php tag
Added ability to open search results in new tab/window the same way trees work
Removed hard coded top nav height (from ExtJS, in favor of using CSS) +
Load appropriate theme index.css instead of forcing default one
Updating Top Nav Icons

per @eladnova comps and as discussed in modxcms/revolution/#11411
Hiding username for smaller screens

As discussed in modxcms/revolution#11411
Also adding absolute-corners mixin/silent mixin pattern
Force resizing of recently edited resources grid when within a dashboard widget
Removed hard coded top nav height + Load appropriate theme index.css instead of forcing default one

* origin/pr/11422:
  Removed hard coded top nav height (from ExtJS, in favor of using CSS) + Load appropriate theme index.css instead of forcing default one
Top Nav Updates

* origin/pr/11426:
  Hiding username for smaller screens
  Updating Top Nav Icons
Added ability to open search results in new tab/window the same way trees work

* origin/pr/11421:
  Added ability to open search results in new tab/window the same way trees work
Added replace closing php tag for inline php dashboard widget

* origin/pr/11420:
  Added replace closing php tag
Property Set icon fixes
Return nothing when toPlaceholder output filter is used

* origin/pr/11414:
  Return nothing when toPlaceholder filter is used.
Property Set icon fixes

* origin/pr/11431:
  Property Set icon fixes
Force resizing of recently edited resources grid when within a dashboard widget

* origin/pr/11427:
  Force resizing of recently edited resources grid when within a dashboard widget
Put images base URL in a configurable variable
Fix image path for login stylecheet
Put images base URL in a configurable variable

* origin/pr/11424:
  Fix image path for login stylecheet
  Put images base URL in a configurable variable
Restores Menu/Action tree icons
FA icons for package browser tree