Draft: Guild Extension skill was stuck at lvl1 and did not change max members (16)

Untested

Marked as draft as you should really make leveling guild skills more expensive before merging this unless you want us to max them all out immidiatelly. If anything, making upgrades and not the casts themselves cost guild coin might be a good idea.

Another related issue at hand is that guilds are per char and not per account. Well, kind of. My alts that are marked as guild newbies are not supposed to be able to access guild storage (as minimum rank to do so is Member), but still can. That, plus once I add all my alts to guild I'm left with only 4 slots of the initial 16.

IMO guilds could start smaller (3-5 members max?) and once one character is in a guild, all characters should automatically be in the same guild. Either that or alts shouldn't count towards the maximum members.