[backend] handle product dependencies for patchlevel=0 correct
[dist] require fuser package psmisc (bnc#863459)
[backend] fix escaping of cpe id
[backend] make provides escaping less agressive, we need to hand over rpm macros here for URLs
[webui] fix syntax error for owned package/project search.

This cause to load all unmaintained packages as a user owned package and can slow
down the loading of user home page a lot on some instances ...
[api] disallow the creation of new group requests

request actions of type group were official never supported
but there is build.opensuse.org which contains quite some of these
requests. However, it is not used there anymore, so dis-allow to create
new requests. But we do validate that the code is still working.
FIXME3.0: drop this code and drop these actions from database.
[dist] switch to xz tar balls
[backend] / is not a valid char for provides
[webui] Remove some zombie parts of the interconnect workflow