Add "Open Script Folder" context menu

via https://github.com/polygonplanet/tombloo/blob/74e5cc003a08197d8a5e62beeca5e7eddbe2ca31/tombloo.extension.open.patches.folder.js
    https://gist.github.com/azu/178438

Thanks, polygonplanet & azu!
Add "Don't show "Share - XXX"" #44

Close #44
Context menu options shouldn't require the browser restart