League Captains (part 3)

I almost got it done while watching derby on the weekend, but the second half of League Captains just landed. (After a brief outage due to mistyping something in a config file.)

League Captains can now edit Events and Locations that someone has created in the League they manage.

Being able to add Events to any League is fundamental to My Derby Diary, but Leagues also need the ability to update them as information changes -- and now they can.

I've got some non My Derby Diary code that I need to deal with next week, and then I think I'm going to try and change Events so they can appear in more than one League in order to let fans of visiting Leagues see Events.