Mirror fix for dragging to all other Page Layout templates. Add note to gotchas about

custom page layout templates, along with instructions for how to modify to make them
work.

docs/changelog/7.x.x.txt

@@ -21,6 +21,7 @@
  - fixed #9939: checkout error with any payment method
  - fixed #10162: Inbox Failing (Eric Kennedy)
  - Survey editor now keeps survey objects in a scrollable panel to keep buttons always in view.
+ - fixed #10198: Cannot drag assets to new positions on page
 
 7.7.3
  - fixed #10094: double explanation in thread help

docs/gotcha.txt

@@ -12,6 +12,16 @@ save you many hours of grief.
 --------------------------------------------------------------------
    * WebGUI now requires XML::FeedPP version 0.40 or greater.
 
+   * Due to a change in the way that assets are dragged in Page Layouts,
+     custom layout templates need to be changed to add another div:
+
+        before:
+            <div class="content"><tmpl_var dragger.icon><tmpl_var content></div>
+        after:
+            <div class="content"><div id="td<tmpl_var id>_handle" class="dragable"><tmpl_var dragger.icon></div><tmpl_var content></div>
+
+     All default WebGUI Page Layout templates have already been updated.
+
 
 7.7.2
 --------------------------------------------------------------------