added description text for streams
added Lars as ReliveRadio crew and added info about genre streams

Lars send this mail. 400 x 400 is right? http://d.pr/i/KgR2 Not in assets yet
fixed urls, changed yearly costs
changed links to genre stream twitter accounts

Not sure if this is the right place.
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Merge pull request #66 from germanstudent/dev

added and changed text for genre streams and info pages