Started parse integration.

Man parse is awesome.
Merge branch 'master' into parse.com
Added jQuery.blockUI for settings.
Implemented syncing to parse.com!
Removed unnecessary variable.
Removed unnecessary code.
Added comment for parse variables.
Only login if syncing is enabled!
Fixed language in signup error message.
Merge pull request #18 from octalmage/parse.com

Parse.com integration!