[Frontend] Dialog and overlay layout/positioning mods

open #159
open #170
Restructured overlay size and positioning approach
for better flexibility;
Getting new dialogs and the overlay to
play nicely in mobile context;

platform/commonUI/dialog/res/templates/overlay.html

@@ -25,11 +25,7 @@
         <a href=""
            ng-click="ngModel.cancel()"
            ng-if="ngModel.cancel"
-           class="clk-icon icon ui-symbol close">
-            x
-        </a>
-        <div class="abs contents" ng-transclude>
-
-        </div>
+           class="clk-icon icon ui-symbol close">x</a>
+        <div class="abs contents" ng-transclude></div>
     </div>
 </div>