Make it possible to preview pipeline success/failed emails
Make it possible to preview pipeline success/failed emails

Visit `/rails/mailers/notify` on your local running GitLab instance to
show a preview pipeline success emails.

darkrasid/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab,dreampet/gitlab,axilleas/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,iiet/iiet-git,stoplightio/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,axilleas/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,dplarson/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,dreampet/gitlab,dplarson/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,htve/GitlabForChinese,mmkassem/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,darkrasid/gitlabhq