[Owncloud] Owncloud 5 and Antivirus App

[Christian Hügel]

Hi,

first of all thank you for this awesome release. We all appreciate the 
hard work you put into it.
After upgrading i tried the new Antivirus app but for a strange reason 
I cannot activate it. Here´s the log:

{"app":"core","message":"App can't be installed because it is not 
compatible with this version of ownCloud","level":3,"time":1363252606}

Thank you.

Cheers,

Chris