Add abilities to retrieve banning information from Argus
WMS: misc. fixes/cleanups
Merge pull request #107 from jouvin/umd3-wms

WMS: misc. fixes/cleanups
Merge pull request #104 from guillaume-philippon/umd-3.central-ban

Add abilities to retrieve banning information from Argus
VO configuration: update grid12 certificate, remove obsolete VOs
GIP CE: preliminary support for GLUE2 (static information)

Fixes #45.