[Mobile] Tests/Header

Removes back arrow on desktops.
Also added queryService to tests
for the context menu action and
gesture.

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

@@ -21,7 +21,7 @@
 -->
 <div class='object-header object-header-mobile'>
     <span class="label s-label">
-        <mct-representation key="'back-arrow'"></mct-representation>
+        <mct-representation class="desktop-hide" key="'back-arrow'"></mct-representation>
         <span class='type-icon icon ui-symbol'>{{type.getGlyph()}}</span>
         <span ng-if="parameters.mode" class='action'>{{parameters.mode}}</span>
         <span class='type-name'>{{type.getName()}}</span>