seo_checklist 6.x-2.1-beta1

Changes since DRUPAl-6--2-0:

• #581466 by Dave Reid | NancyDru: Removed inappropriate package from seochecklist.info.
• by Dave Reid: Fixed module variables not being uninstalled.
• #611964 by Dave Reid: Added vertical tabs integration.
• by Dave Reid: Fixed the top 'Save' button from displaying when vertical tabs are present.
• #594766 by Dave Reid: Fixed broken link to double-check clean URLs.
• #605418 by Dave Reid | lyricnz: Fixed links and references from Live to Bing.
• by Dave Reid: Fixed misc code cleanups.
• by Dave Reid: Moved seochecklist.css into the module root directory. It was lonely and now it conforms to core standards.
• by Dave Reid: Moved a large chunk of the module code into seochecklist.admin.inc so it won't be loaded during every single request.
• #443506 by tresero, Dave Reid: Fixed the datetime field by combining the option_checked, date_changed, and checked_module columns into {seo_checklist}.completed which stores a UNIX timestamp or 0.
• #443506 by tresero, Dave Reid: Fixed PostgreSQL incompatibilities.
• by Dave Reid: Fixed more incorrect modules and links.
• by Dave Reid: Removed the {seo_checklist}.subgroup_id field.
• #610926 by Dave Reid: Added {seo_checklist}.uid to record which user completed each task. Also prettified the interface a little more and corrected non-lowercase {seo_checklist}.module values.
• #611958 by Dave Reid: Eased the 6.x-1.x to 6.x-2.x upgrade path.
• by Dave Reid: Updating the README and upgrading instructions.
• #610932 by Dave Reid: Added references
• #618772 by zolikonta, Dave Reid: Fixed link to Google Local Business Center.
• by Dave Reid: Improved the vertical tabs message.
• by Dave Reid: Un-bolded the shouty message at the top of the checklist page.
• by Dave Reid: Fixed coder warnings.