Merge pull request #23 from nwtn/master

Ignore articles (e.g. "the") when sorting movies using toggle in Tools menu

Sets a cookie which if removed likely unsets option (untested)
Fixed movie set management (add, delete, rename)

no need for the associated functions in include/xbmc.js
it is all managed by xbmc now

& update changelog to last commit

3.0.0a
- Slash, fixed movie set management (add, delete, rename)
version bump on XWMM window

Make window match current version.