Helper for GitHub notifications in Gmail

A web extension for Chrome and Firefox which adds keyboard shortcuts for opening and muting GitHub notification emails. Mute thread in mail view. It will open a background window to load the mute thread URL, and close itself when done. This only works if you have an active GitHub session. ctrl + return to trigger one the action button when an email is selected using gmail key navigation (when the blue bar appears). Load the extension manually and modify the code accordingly.