Issue #1178334 by jenlampton: Add template suggestions for panel pane based on pane type and subtype.

Remove the node override page wizard and instead encourage people to use panelizer or display suite.

Issue #1277908 by ASupinski: Better pane counting on exports that will create more unique pane ids when exporting multiple panels.

Issue #1241064 by pillarsdotnet: Ensure content object returned by ctools_content_render is in fact an object.

Issue #1144650 by Amitaibu: Fix notice if mini panel was deleted but still used in a panel somewhere.