Convert all help files to markdown files in doc directory

Backup Uploads Symlink

DB Reaping Frequency

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

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

Thanks to @jojosch for the initial work on the web-hooks.html.haml file!

Files moved:
* Workflow
* help/ssh
* help/webhooks
* help/system_hooks
* help/public_access
* help/permissions

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

Fix Backup Spec

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

fixed typo at the user management help page

Assuming that VERSION != VERSION.reverse is not robust. This will fail
at e.g. version 6.6.6.

Issue Improve Ui

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>

Postgres fixes

For applications migrated from MySQL to PostreSQL it fixes some issues
Fixes #1060

 Use new gitlab_git gem. It makes CONTRIBUTING.md work

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

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

Fixed attachment identifier displaying underneath note text

remove dead code: broken_diffs

Less strict backup versions

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>

Previous to this commit, backups were tied to the git revision (SHA1) of
the app at the time the backup:create command was invoked. If the SHA1
at the time of restore was different, the script would refuse to restore
the backup.  This commit loosens this tie so that the backup script only
complains if the value of the Gitlab::VERSION constant is different
between the time of backup and the time of restore.

Pg Force Restore

Enable html_escape for code blocks highlighted in markdown

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/94

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

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

Fix backup/restore git hooks bug