async_method improved
Subprocess class added to wrap IO.popen
Callbacks for updating the authorized-keys added.

and some refactoring
async_method improved
Subprocess class added to wrap IO.popen
Callbacks for updating the authorized-keys added.

and some refactoring
Merge branch 'git' of github.com:ontohub/ontohub into git
failed attempt to fix #301

The RemoteRepository needs the user for saving ontologies, however it does't exist.
fix #301
Merge branch 'git' into develop
Merge branch 'develop' into develop.ontohub.org