comments: modal dialog fix

* Actually removes modal elements on modal close, not just hides them, resulting
in duplication.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
registry: (auto)discovery and proxy fixes
sqlalchemy: use of autodiscover registry proxy
Merge remote-tracking branch 'adrianp-github/poo' into pu
jsonalchemy: first release
jsonalchemy: fixes
jsonalchemy: fix for wrappers bson default dict
jsonalchemy: second release