[Fronted] Significant refactoring of btn classes

WTD-839
Refactoring in advance of style mods to switcher when in frame;
Moved btn styles from _controls.scss to _buttons.scss;
Markup cleaned up with css classing simplified;

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

@@ -21,14 +21,12 @@
 -->
 <span>
     <div class="object-browse-bar bar abs">
-
         <div class="items-select left abs">
             <mct-representation key="'object-header'" mct-object="domainObject">
             </mct-representation>
         </div>
 
         <div class="view-controls sort-controls btn-bar right abs">
-
             <mct-representation key="'action-group'"
                                 mct-object="domainObject"
                                 parameters="{ category: 'view-control' }">
@@ -39,7 +37,6 @@
                                 ng-model="representation">
             </mct-representation>
         </div>
-
     </div>
 
     <div class='object-holder abs vscroll'>

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

@@ -24,5 +24,5 @@
     <span ng-if="parameters.mode" class='action'>{{parameters.mode}}</span>
     <span class='type'>{{type.getName()}}</span>
     <span class='title'>{{model.name}}</span>
-    <a id='actions-menu' class='ui-symbol invoke-menu' onclick="alert('Not yet functional. This will display a dropdown menu of options for this object.');">v</a>
+    <!--a id='actions-menu' class='ui-symbol invoke-menu' onclick="alert('Not yet functional. This will display a dropdown menu of options for this object.');">v</a-->
 </div>

platform/commonUI/browse/res/templates/create/create-button.html

@@ -21,7 +21,7 @@
 -->
 <div class="menu-element wrapper" ng-controller="ClickAwayController as createController">
     <div class="btn btn-menu create-btn major" ng-click="createController.toggle()">
-        <span class='ui-symbol major' href=''>+</span> Create<!--span class='ui-symbol invoke-menu'>v</span-->
+        <span class='ui-symbol' href=''>+</span> Create
     </div>
     <div class="menu dropdown super-menu" ng-show="createController.isActive()">
         <mct-representation mct-object="domainObject" key="'create-menu'">