RhodeCode CE/EE

Couple bugs:

• dulwich 0.12 has issue with missing function - https://github.com/jelmer/dulwich/issues/401, upgrading to dulwich 0.13 should fix this

 +--- This exception occured remotely (Pyro) - Remote traceback:
 | Traceback (most recent call last):
 |   File "/nix/store/gi2yly823fcj0wcff15jrl5r1xjh4sal-python2.7-Pyro4-4.35/lib/python2.7/site-packages/Pyro4/core.py", line 966, in handleRequest
 |     data = method(*vargs, **kwargs)  # this is the actual method call to the Pyro object
 |   File "/Users/dan/Projects/rho/rhodecode-vcsserver/vcsserver/git.py", line 55, in wrapper
 |     return func(*args, **kwargs)
 |   File "/Users/dan/Projects/rho/rhodecode-vcsserver/vcsserver/git.py", line 209, in clone
 |     remote_refs = self.fetch(wire, url, apply_refs=False)
 |   File "/Users/dan/Projects/rho/rhodecode-vcsserver/vcsserver/git.py", line 55, in wrapper
 |     return func(*args, **kwargs)
 |   File "/Users/dan/Projects/rho/rhodecode-vcsserver/vcsserver/git.py", line 344, in fetch
 |     path=url, target=repo, determine_wants=determine_wants)
 |   File "/nix/store/jjiqfyfdqis7lpnmmzlx1jsdp5z9d8qj-python2.7-dulwich-0.12.0/lib/python2.7/site-packages/dulwich/client.py", line 251, in fetch
 |     abort()
 | UnboundLocalError: local variable 'abort' referenced before assignment
 +--- End of remote traceback

• Importing a remote git repo doesn't work - seems to create a repo group by the name instead