base: demosite populate bibupload task removal

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: Gravatar fix

* Fix also in messages module.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
accounts: disable local login

* Set CFG_DISABLE_LOCAL_LOGIN.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
installation: pyld Python <=2.6

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>