Fix the TV section that i broke with 683684c7

This fixes issue #57
XBMC expects rating to be a number not a string.

This is preventing changes from being saved as well. (#57)
Fix the mark (un)watched in the TV section.

This fixes issue #58.
Fix typo in README.md - XWMM not X V MM
Merge pull request #74 from fyfe/fix-issue-74

Fix typo
Merge pull request #63 from fyfe/fix-issue-57

Fix #57 Tvshow update doesnt work.
Merge pull request #64 from fyfe/fix-issue-58

fix #58  TV show - Mark as watched/unwatched has no effect
Update change log and bump version number.
Merge pull request #75 from fyfe/update-changelog

Update change log and bump version number.
The files section is broken beyond repair, and XBMC's API doesn't support anything
that would make this section useful.

(Issue #43)
Remove unused XBMCScanContent function from include/xbmc.js
Remove scraper artwork as it's no longer used.
Remove unused tree grid extension.
Update change log for issue #65.
Merge pull request #65 from fyfe/anti-feature-kill-file-section

fif: Remove the file section thx fyfe
The actor section is broken beyond repair, and XBMC's API doesn't support anything
that would make this section useful.
Remove unused FindCRC function.
Remove unused functions from include/xbmc.js
Remove menu links to actors section.
Update change log for issue #66.