This commit adds spinners to what I believe to be all the buttons on the following pages: - follow: add spinner to follow button - issues/new: add spinner to create button - issue: add spinners to close/reopen issue buttons - issueComment: add spinner to delete button - editIssueComment: add spinner to check mark button - pulls/new: add spinner to create button - pullNewComment: add spinner to comment button, submit and cancel - pullResubmit: add spinners to resubmit / cancel button - settings: add spinners to buttons - knots: add spinners to buttons - settings: add spinners to user settings page