Dynamic Factions

Mostly just bug fixes this time around.

• Fixed a glitch that didn't remove a player's invite when the faction is disbanded, allowing the player to join the faction while there is no leader.
• Fixed a glitch that didn't remove a player's invite when they accept the invite, allowing players to re-join a faction as many times as they want even if they get kicked.
• Fixed a glitch where it will notify a player that a faction already exists when they try to create a faction, while they are in a faction, even if the faction they tried to create did not exist.
• Added distance checking for the upcoming territory conquest features.

• the passowner sub-command does not work properly. It will just say "(player) is in another faction." even if they are in the same faction. This has already been fixed for the next patch though.