[Fixed Position] Change class based on selection state

Change classes for all non-selected objects when an object is
selected, WTD-882.

platform/features/layout/res/templates/fixed.html

@@ -15,6 +15,7 @@
                  style="position: absolute;"
                  key="element.template"
                  parameters="{ gridSize: controller.getGridSize() }"
+                 ng-class="{ disabled: controller.selected() && !controller.selected(element) }"
                  ng-style="element.style"
                  ng-click="controller.select(element)"
                  ng-model="element">