Cleaning up master-only files
Adding skeleton for firefox extension:
moving files into their firefox equivilents
using mocked up main.js for the background until bg.js can be made similiar enough to be compatible.
using mocked up package.json, may be some overlap with manifest.json from the chromium port? This is probably just wishful thinking!
Removing config.xml and index.html - unnecessary for firefox!
Adding ignore for Extension_old
Merge branch 'master' of github.com:mintsoft/MintSync into firefox

Conflicts:
	Client/Extension/config.xml
	Client/Extension/index.html
Merge branch 'origin/firefox'