Assign navaids to newest bombers/fighters first
Add some large coloured line-art images of first 4 bombers.  Not used yet.
Tweak bomber stats (make Lanc and Mosquito slightly less awesome)
Slightly increase H2S production
Bump copyright year to 2014
Started major UI refactor.  Incomplete and doesn't compile yet

Includes main_menu and load_game screens
Refactored out save_game screen
Move an #include into a more appropriate place
Separated out control_screen (was label 'gameloop').  Lots of secondary damage
Refactored out run_raid
Refactored out raid_results and post_raid, wrote main loop - doesn't work yet
Fixed the new main loop
Fix main_menu_create
Moved some utility functions to render.c and ui.c
Fix an off-by-one bug causing an invalid memory read
Fix incorrect allocations of GB_raidload (too many indirections in the sizeof)
Fix scoping error in run_raid.c