cherry-picking fix for bug #59
Better video info decoding

Conflicts:
	src/iaextractor.xpi
	src/lib/youtube.js
compiling changes into the XPI
minor bug fixes
Support downloads of Russian subtitle
New design for the injected menu
Merge remote-tracking branch 'origin/beta' into UI_v3

Conflicts:
	src/iaextractor.xpi
	src/lib/subtitle.js
	src/lib/youtube.js
	src/package.json
Adding uptodate XPI