Initial work on 0x006BEF1B.
Removed comments, removed v3 variable.
Cleaned up more code in sub_6BEF1B.
Added gfx_invalidate_window
Added sub_6BED21 (called from sub_6BEF1B).
Removed goto in sub_6BED21.
Changed hardcode address to RCT2_ADDRESS_SPRITE_LIST.
Changed sub_6EBED21 to use peep as a parameter.
Used proper function for window_invalidate.
Remove duplicate function. Change comment to prevent repeat
Added more cheat strings to load from language file
Merge pull request #281 from duncanspumpkin/cheats_string

Added more cheat strings to load from language file
Merge pull request #280 from duncanspumpkin/gfx_invalidate_window

Added gfx_invalidate_window
Initial Dutch translation (not yet complete)
Merge pull request #282 from Gymnasiast/master

Initial Dutch translation (not yet complete)
Changed sub_6BEF1B to use window_create_auto_pos rather than the subfunction.
Removed unused parameters, fixed warning.
Added french language (from English copy).

    For now, it's just a copy of the english.txt file.
Fix see through glass
Fixes #287