Make the HUD overlay the game board

 This should really help us on big maps. HUD elements still need work in not using too much space. Also, we should zoom the board out a little somehow.
Redo the HUD, now panels are hideable and moveable. The position you move them to will be saved in local storage.
Added some default settings
Changed icon color to white and gave some opacity.
Add a big map
Make a bunch of different map versions at different sizes

I haven't been able to dynamically scale the game. I posted this question: http://www.html5gamedevs.com/topic/7304-scaling-the-game-down/

Until that happens, we'll just have a bunch of extra stuff to manage.
Merge pull request #32 from Atlas-/overlay-hud

Overlay HUD and various map scales