Merge pull request #7585 from bbodenmiller/patch-11

clarify which configs should be updated
7.3 started
Remove outdated 6.0 to 7.1 update guide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
add Nginx test
improve formatting

* fix code blocks
* Make capitalization of titles consistent - missed some in
https://github.com/gitlabhq/gitlabhq/pull/7576
Merge pull request #7575 from bbodenmiller/patch-3

[Documentation] add nginx test
Merge pull request #7582 from bbodenmiller/patch-5

[Documentation] more cleanup installation guide formatting
Merge pull request #7569 from offlinehoster/patch-2

Added AsciiDoc support and changed to singlequotes
remove extra cd's to GitLab installation folder
Merge pull request #7593 from bbodenmiller/patch-3

remove extra cd's to GitLab installation folder
Monthly active users -> Active users last 30 days

Clarify what `Monthly active users` means by changing to `Active users last 30 days`.
add sign-in count

add sign-in count to admin section profile view
add current sign-in date

add current sign-in date to admin section profile view