[Code style] Cleaned out comments

open #250
open #274
scss, html scoured for commented
dead code, leftover TO-DOs and
other unnecessary comments;

platform/commonUI/browse/res/templates/browse/object-header.html

@@ -19,7 +19,6 @@
  this source code distribution or the Licensing information page available
  at runtime from the About dialog for additional information.
 -->
-<!--<div class='object-header'> Moved up to browse-object.html and frame.html. TO-DO: make sure this is Ok!-->
 <span class='type-icon ui-symbol flex-elem'>{{type.getGlyph()}}</span>
 <span class="l-elem-wrapper l-flex-row flex-elem grows">
     <span ng-if="parameters.mode" class='action flex-elem'>{{parameters.mode}}</span>
@@ -28,5 +27,4 @@
         key="'menu-arrow'"
         mct-object='domainObject'
         class="flex-elem"></mct-representation>
-</span>
-<!--</div>-->
+</span>