Import the database as the `git` user

This ensures that all tables created during the import belong to `git`.
If you import as a different user, such as the `postgres` superuser, you
may encounter issues where the GitLab database user cannot access tables
in gitlabhq_production, _even if_ `git` is the owner of
gitlabhq_production at the time of import.
Cleaner UI for login/signup pages

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Set charset encoding to UTF-8 for snippets

Fixes #2678

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Use one word per line in Gitlab::Blacklist
Add 'unsubscribes' to the paths blacklist

GitLab EE has a /unsubscribes/ route.
Always set the origin remote in satellite actions

This prevents issues with satellites containing outdated origin remotes
after administrators move the git repositories directory.
change X-Frame-Options to SAMEORIGIN

needed to allow sidekiq to load on background jobs tab
unify nginx config files
Remove outdated 6.0 to 7.1 update guide
Merge pull request #7578 from bbodenmiller/patch-8

Unify Nginx files to match as closely as possible
Merge branch 'cleaner-login' into 'master'

Cleaner UI for login and signup pages

![Screenshot 2014-08-15 17.51.52](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/fc8bf3c4a4/Screenshot_2014-08-15_17.51.52.png)
![Screenshot 2014-08-15 17.52.39](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/72706f55b0/Screenshot_2014-08-15_17.52.39.png)
![Screenshot 2014-08-15 17.51.33](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/c46f972944/Screenshot_2014-08-15_17.51.33.png)

See merge request !1022
Merge branch 'import_postgres_user' into 'master'

Import the database as the `git` user

See merge request !762
Merge branch 'always_set_satellite_origin' into 'master'

Always set satellite origin

See merge request !1036
Merge branch 'blacklist/unsubscribes' into 'master'

Add 'unsubscribes' to the paths blacklist

This is to prevent issues with the admin email feature in GitLab EE.

See merge request !1034
Merge pull request #7558 from bbodenmiller/patch-4

change X-Frame-Options to SAMEORIGIN for nginx SSL config
Merge pull request #7518 from jvanbaarsen/snippet-charset-fix

Set charset encoding to UTF-8 for snippets
simplify 6.0 to 7.2 upgrade guide