Custom font stuff
More testing custom font stuff.
Reverting to Courier Bold font for menu items.
Finalized save/load buttons.
Added pause menu.
Added background to menus.
Changed combat back to "turn-based."
Miscellaneous duel changes.
Added pirate fortress to win/lose.
Enemies now move on a turn-based system.
Ungimped enemy fighters, slowed enemy ships.
Added backgrounds and miscellaneous things

Most importantly, ports now keep track of whether or not their prisoner
has been rescued.
Tweaked final battle, hopefully fixed a crash.
Merge remote-tracking branch 'origin/master' into gh-pages

Conflicts:
	src/menus.js