Initial example of all options in gitlab.rb.
Give better examples of that the external url should include a protocol.
List all configuration options.
Remove unecessary nesting in headers for example gitlab.rb.
Merge branch 'include-protocol' into 'master'

Include protocol

See merge request !259
Remove aws information from readme.
Update the settings template.
Add the configuration options to gitlab.rb.
Merge branch 'aws_readme' into 'master'

Aws readme

In discussion with @jacobvosmaer we realised that the packages do not support enabling aws attachments storing.

People still might use the custom gitlab to build their own packages so that is why I opted for just removing the section of readme.

See merge request !262
Put headers into blocks.
Merge branch 'master' into configuration_options

Conflicts:
	package-scripts/gitlab/postinst
Move the comment blocks out of the headers.
Merge branch 'configuration_options' into 'master'

Configuration options in gitlab.rb

Related to #356

See merge request !261