Issue #328: Provide a way to get the last inserted ID from db_merge().
Merge pull request #461 from quicksketch/328/db_merge_result

Issue #328: Provide a way to get the last inserted ID from db_merge().
Fixing broken path to gear image.
Issue #130: Remove global theme settings for main and secondary menus.
Issue #130: Move logo and favicon upload settings to site information page, remove toggles.
Issue #130: Remove the toggles for site name and site slogan.
Issue #130: Move theme setting for user pictures in posts into content type setting with author and date.
Issue #130: Remove the theme setting for User verification status and move setting for User pictures in comments into comment settings per node type.
Issue #130: Remove global theme settings page callback.