Make rc1 for GitLab.com complete and fix boldness.
Seperate CE in EE merge.
Merge branch 'release-template' into 'master'

Release template

See merge request !974
Improve rc tweet.
Change deafult admin email to example.com
Merge branch 'rc-twitter' into 'master'

Rc twitter

/cc @marin

See merge request !978
Merge branch 'change-admin-email' into 'master'

Change admin email

Related to #1446

See merge request !979
Mention email change in README

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>