Added basic support for Git-FTP

Currently it supports:

Define new scope (Git-FTP remote)
Delete existing scope
Switch between scopes
Init scopes after defined
Push to scopes
Enable/Disable Git-FTP features
This PR also rewrites most of the "remotes picker" feature.
Merge branch 'git-ftp' of http://github.com/FezVrasta/brackets-git into FezVrasta-git-ftp

Conflicts:
	htmlContent/git-panel.html
	nls/root/strings.js
	src/Main.js
	src/Panel.js
	src/Remotes.js
refactoring
refactoring
refactoring