[Frontend] Added top right resize corner

WTD-1404
WTD-1376

platform/commonUI/general/res/sass/edit/_editor.scss

@@ -32,11 +32,19 @@
     .edit-corner {
         width: $handleD;
         height: $handleD;
+        &:hover {
+            z-index: 11;
+        }
         &.edit-resize-nw {
             @include border-bottom-right-radius($cr);
             cursor: nw-resize;
             top: 0; left: 0;
         }
+        &.edit-resize-ne {
+            @include border-bottom-left-radius($cr);
+            cursor: ne-resize;
+            top: 0; right: 0;
+        }
         &.edit-resize-se {
             @include border-top-left-radius($cr);
             cursor: se-resize;

platform/commonUI/general/res/sass/user-environ/_frame.scss

@@ -50,9 +50,7 @@
 	&.frame-template {
 		// Hide the view switcher by default when it's in an element that's in a frame context
 		// Frame template is used because we need to target the lowest nested frame
-		// This has the effect of hiding the view switcher in nested frames in edit mode, which is desirable currently (as it's non-functional)
 		.view-switcher {
-			//display: none;
 			opacity: 0;
 			z-index: 10;
 		}