Enabling Extension:Echo for testwiki

I really think the extension should be enabled on the test wiki, if not by default on all wikis.
Fixed backslash error in urls

This should fix the following issue:

https://github.com/Orain/ansible-playbook/issues/221
Add nagios3 to playbook

Used a new monitoring services on prod1
Fix role name
styling
Change to weekly log rations for nagios3
Remove useless group + addshore contact block
styling fixes
Few wiki config changes
Fix style
Remove MediaWikiChat; enable ImageMap; attwiki
Change verkeerswiki to nl
reviwiki namespace subpages
Fix database name
Renamed db
Take 'OrainFooter' live
Fixed error

MediaWiki:Commons.css => MediaWiki:Common.css (Or "MediaWiki:Commons.css" was just right, I don't know :P)
Merge pull request #234 from Southparkfan/patch-1

Fix naming of Common.css
MediaWiki wants "" instead of '' now...
Add email to nagios