Allow /region flag to set group and value at once
The usage for "/region flag" implies both can be set at once:
/region flag <id> <flag> [-g group] [value]
However if the [-g group] [value] portions are specified, only
the group is set and the value is silently ignored. With this
commit, both values can be set at once. All other behavior of
the "flag" command is preserved. If only the [-g group] part is
given, then only the group flag changes and the regular flag's
value is unaffected. If neither part is given, then the flag is
cleared. (7e419c by wojciech stryjewski)
Allow removing of -g group flags with /region flag
The @Command parser requires that a value follow the -g option when
used in /refion flag. Therefore, it's not possible to remove the -g
flag by omitting it's value, as it is possible with the regular flags.
Rather, if the group flag is set to what would be the default region
group for the normal flag, then the group flag is actually removed
and the user sees a "Region group flagfor '...' reset to default."
message. (2cbc2f by wojciech stryjewski)
Improve /region info output for -g group flags
If a region group flag has been set with the -g option to /region flag
the /region info command will not show it at all because these group
flags are not in the DefaultFlag.getFlags() array.
With this code change, if a group flag has been set on "entry" for
example, it might be shown as "Flags: entry -g OWNERS: ALLOW". (68b5e3 by wojciech stryjewski)