keep group description when first pack of a group is removed.
bugfix: regroup (inspired by Takatoo, TheDeath)
versions affected: 1.1 to 1.9
bot could hang when entries without a group does exist.
19) new admin commands:
REGROUP main <newname> put all files without a group in the new group
20) new user command alias: (inspired by [GFE]Lunix)
xdcc list group <group> ==> xdcc list <group>
21) new user command:
xdcc list all
If set, "xdcc list" without an option will be rejected.
This allows to list a single group only.
If set, "xdcc list all" will be rejected.