Play flow fixes

[artehe]

Improve the implementation of the play pages flow based on some feelback from @belettee

• The login dialog should make more sense and not say username twice
• Remember me should now actually remember
• Add character button will register a new character with the server
• Change the start to use a more subtle system that I think might make more sense but we shall see
• The edit server button will be slightly clearer on what it does.

[Plootie]

Looks like you've fixed the desync :D just a minor thing, Updating the port number doesn't apply until restarting the manager. Happy to merge once that's fixed ^^