Notifications documentation

Fixes #1583

See merge request !1177

Fix star icon

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/682.

See merge request !1180

Improve MR widgets

Before:

![Screenshot 2014-10-14 17.49.03](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/0283aa379e/Screenshot_2014-10-14_17.49.03.png)

After:

![Screenshot 2014-10-14 17.48.58](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/ca9f2bae19/Screenshot_2014-10-14_17.48.58.png)

See merge request !1178

Issue ldap initialization

If LDAP is disabled error will appear:

```
ERROR -- : Missing setting 'servers' in 'ldap' section in /Volumes/Work/gitlab/development/community/gitlab/config/gitlab.yml (Settingslogic::MissingSetting)
```

@marin Can you test if this will solve the startup problem?

See merge request !1179

add missing cleanup step

make sure tables are UTF8 capable

As discussed at https://github.com/gitlabhq/gitlabhq/pull/7742#issuecomment-58897445 make sure that tables have correct char set.

Feature multiple ldap servers

Update the code so Gitlab-EE can support multiple LDAP servers

See merge request !1172

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

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

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

Libravatar documentation

Fixes #1248

See merge request !1173

Notification level note

Fixes #1406

![Screenshot 2014-10-14 12.28.40](https://dev.gitlab.org/uploads/gitlab/gitlabhq/e2aef0a8d6/Screenshot_2014-10-14_12.28.40.png)

See merge request !1174

And add some advertisement to use GitLab EE

update changelog

Change log entry for https://github.com/gitlabhq/gitlabhq/pull/8020

Make new and edit file submit more uniform