Create project

Everything is fixed according DZ comments.
Added a bit sexy transition for our project buttons ><

refactoring buttons, fixes for projects filter on the dashboard and
group page

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

Clarify confirmation text on user deletion.

See #1699

Some users thought it was ok to delete the user because they'd only use the issues.  
This clarifies a bit better what's being deleted when you delete a user.

See merge request !1382

Fix CI backup step in migration guide

[ci skip]

See merge request !1397

[ci skip]

Skip check_initd_configured_correctly on omnibus installs

This was causing the task `gitlab-rake gitlab:incoming_email:check`
to fail.

See merge request !1396

Add better deprecation notice for the upgrader. Too easy to miss otherwise https://twitter.com/0x663030623472/status/646262552796594176

This was causing the task `gitlab-rake gitlab:incoming_email:check`
to fail.

8.0.0 is released; add 8.0.1 entry to CHANGELOG

[ci skip]

See merge request !1394

[ci skip]

Update CHANGELOG

Add to migration on what to do if you don't want your data.

If you don't want to migrate your CI data , remove the old builds directory.

See merge request !1392

Mention Reply by email in installation doc.

Added the "Enable Reply by email" section and moved the others around.

See merge request !1390

Ci migration doc improvements

Use export improvements in CI 8.0.1, make upgrades a more prominent part of the process, do not shut down GitLab during CI data import.

See merge request !1387