Merge branch 'syntax_highlight_diff_email' into 'master'
Add syntax colors to diffs in email-on-push notifications ## What does this MR do? This MR adds syntaxhighlighting to the email-on-push notifications. ## Are there points in the code the reviewer needs to double check? No ## Why was this MR needed? Currently the diff in email-on-push notifications is just a monochrome diff that's hard to read. This MR adds colored syntaxhighlighting to the mails. ## What are the relevant issue numbers / Feature requests? * It closes https://github.com/gitlabhq/gitlabhq/issues/6994 * There is a Discussion in the Feedback Forum: http://feedback.gitlab.com/forums/176466-general/suggestions/5802256-add-color-to-diffs-in-email-on-push-service-to-htm * A pull request for this already existed, but was closed. https://github.com/gitlabhq/gitlabhq/pull/7739 ## Screenshots see prior Pull Request for a screenshot See merge request !295