Add a guild sort for inactivity

I manage two guilds (over 200 members total) on Grandapan and the time it takes to remove inactive players is exeedingly difficult.

It seems common sense to me that I should be able to sort the guild list based on the last time they logged in. Since this is already something that is kept track of in game, I don't feel that this would be too hard to implement.

Also, when looking through the guild list, you are bumped to the top of the list whenever a players logs on. Please stop this from happening! This also makes looking through a large guild roster very annoying.