Proofreading

More consistent capitalisation and hyphenation, typos fixed.
Ok we can have even GMGEO9 and GMTACTIC9 now.
And we can use .mod and .wav files from now on.
New Option: Include prime-state in the saved equipment-layout
Default: OFF
Merge branch 'master' into typofixes

Conflicts:
	bin/data/Language/en-GB.yml
	bin/data/Language/en-US.yml
fix blaster launcher bug
Merge branch 'includePrimeStateInSavedLayout' of https://github.com/fenyo1/OpenXcom into fenyo1-includePrimeStateInSavedLayout
don't give anything but grenades fuses, it's bad.
hey getlocalization, look! tasty new strings
Merge pull request #782 from cfailde/typofixes

Proofreading en_GB and en_US language files
Merge pull request #780 from fenyo1/MusicExpansion

Ok, we can have even GMGEO9 and GMTACTIC9 now.
overhaul the overhaul

seperate game resolution into battle and geo flavours, and switch as appropriate

remember folks: changing the base res is highly experimental, and not fully supported.
it works as far as i can tell but don't expect perfection.
how did that even compile locally i don't even
Static analysis fixes.
Cleaning up Options text.
Updated installer
fix combobox scroll button positioning

and uh, textlist scrolling buttons in general?
reposition new video thingy
oh god i'm hunting pixels, send help.
optimizations, corrections and bugfixes for game scales

use enum instead of numbers: makes for readability and highlights obvious mistakes
select the closest unit to the ramp on exiting pre-battle equip.