Cookie and temporal user.
Messing with sessions...
Permanent session for guest user.
Page to view unowned towns (readonly).
Login form and post.
Login and logout.
Basic signup.
No space in usernames.
List of towns owned by current user. And some redirects.
Other users can't play (send) on other towns.
isYourTown() function. End of 'users' branch.
Merge branch 'users'