Translaion maintenance.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Further translation.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	bin/data/Language/Ukrainian.lng
Merge remote-tracking branch 'upstream/master'
Installer: Hungarian language added.
Merge pull request #835 from fenyo1/InstallerHUNLang

Installer: Hungarian language added.
make skyranger fins eastwalls
Made UnitStats modular, no longer need to specify every stat when modifying a unit.
Merge branch 'master' of https://github.com/SupSuper/OpenXcom
Slovak installer
Smoothing the UI. Smoother sliders, smoother scrollbars, smoother scrolling.
fix intro volume
make mousewheel speed configurable
less obfuscation
fix zoom relative keyboard rotation speeds
optimize globe rotation a little

worked in battlescape, no reason it can't work here too.
firestorm/interceptor map fixes with thanks to TurkishSwede
no period needed there (sorry translators)