Show only processes owned by the GitLab user on the Admin-Sidekiq page

Remove text-shadow from code blocks for all themes

Fix typo in sample smtp settings

set maximum filesize for avatar on profile page correct

Typo fix in show.html.haml

Update 6.1-to-6.2.md

Ensure that highlighted code blocks never get a text-shadow regardless of where they are or what theme is used.

Personl -> Personal

Added a few enters so markdown can process the code (without adding bash in front of it)

Minor grammatical updates in some of the labels.

Add specs for NotificationsHelper

corrected the url of the init-script

Use init.d/gitlab script from 6-0-stable branch

Seems like init.d/gitlab script from master branch is not working anymore. Change to a version from 6-0-stable works fine.

It says:
```
Starting the GitLab Unicorn web server...
/etc/init.d/gitlab: 132: /etc/init.d/gitlab: script/web: not found
Starting the GitLab Sidekiq event dispatcher...
/etc/init.d/gitlab: 141: /etc/init.d/gitlab: script/background_jobs: not found
GitLab is not running.
```