Added AsciiDoc support for the Project Wikis

[offlinehoster]

the gem asciidoctor is already instaled inside gitlab, so you can use asciidoc support inside the project wikis.

[TeatroIO]

I've prepared a stage. Click to open.

[houndci-bot]

Prefer single-quoted strings when you don't need string interpolation or special symbols.

[offlinehoster]

Is there an easy way to restart 2 Builds again?

8274.8 stopped because of "Gem::RemoteFetcher::FetchError: Errno::ETIMEDOUT: Connection timed out - connect(2) (https://rubygems.org/gems/rack-1.5.2.gem)"

and

8274.10 is exiting with The command "bundle exec rake $TASK --trace" exited with 1

@randx could you restart the travis-ci build again for this pull request?

[Razer6]

@offlinehoster Your wish is my command. Can you please switch to single quotes? (and change also the line above)?

[offlinehoster]

@Razer6 you're already using double quotes https://github.com/gitlabhq/gitlabhq/blob/master/app/models/project_wiki.rb#L4-L7

[Razer6]

@offlinehoster I know. But we're trying to add new code according to our introduced codestyle.

[mojavelinux]

👍