Attempt to fix the Travis run for ownCloud
Attempt to fix the Travis run for ownCloud

Try to download the ownCloud 10.0 installation package from the release
channel, as building it from git seems to be problematic. If this
works, then other OC versions may be added later.

Also, no longer allow NC-master run to fail, as that has been fixed by
the previous commit.

owncloud/music,owncloud/music,paulijar/music,paulijar/music,owncloud/music,owncloud/music,paulijar/music,paulijar/music,owncloud/music,paulijar/music