Fixed issue with e621 parser

Added support for Derpibooru

Fixed E621, Danbooru and Sankaku issues

Updated settings page.

Fixed Rule34.xxx and Danbooru.donmai parsers.
Added video support for Rule34 and Gelbooru

Added support for non-english language pages of Sankaku complex .
Fixed video downloads for Sankaku complex.

Updated for Gelbooru and Safebooru.

Added download hotkey. Default is Ctrl-F2.

Updated for Danbooru, fixed small bug in E621 parser.

Updated for E926 and E621

Fixed issue: E621 images with missing copyright, artist or character tags would not save
Fixed issue: E926 images would not get saved

Updated to reflect e621 and e926 updates.

Bugfix: images without a character tag would not save.

New feature: if an image has no character or copyright tags, a substitute can be added for the absence of either.

Bugfix: Images in a pool on E621 and E926 can now be saved
Bugfix: Save string can now have multiple instances of an item
New feature: You can choose to replace underscores with spaces in the save string
New feature: images with multiple character tags can now have the character tag replaced with a value of your choosing, like with copyrights
New site supported: Sankakucomplex

Added support for E621 and E962 as per user request. Enjoy.

Added support for yande.re, sonohara.donmai.us, and hijiribe.donmai.us as per request from a reviewer. Enjoy.

Updates in this version:
- TBIB updated their software, and this add-on has been updated to work in the new TBIB
- support for konachan.com and konachan.net has been added