Added Chrome support

Major update, now featuring Chrome support via Tampermonkey engine, as well as multiple bugfixes and new features. As a bonus, some Firefox compatibility via Greasemonkey can be expected too.

Changelog:

• Use folder names as tags option
  Now both keys and values of the Folders database can be recognized as tags, saving you the trouble of making separate entries for both unicode and ansi versions of a single tag.
• Linkify all images option
  Now even smaller images in photo posts as well as inline images in any posts are properly linked and processed by the script, allowing you to acquire HD pictures from wherever possible. Small inline images are linked to their reverse image search on Google.
• Check write to database success
  Should a flashDB size limit to be hit, the user will be notified and suggested a way to fix that.
• Cumulative tags storage
  Upon visiting different reblogs of the same image the tags associated with it will be stacking up, ensuring maximum information coverage.

ready for testing