Merge branch 'feature-viewport' into devel

core/assets/common/screen/gamemenu/gfx/unos_back.png

core/assets/common/screen/gamemenu/gfx/unos_fore.png

core/assets/common/screen/gamemenu/gfx/unos_mid.png

core/assets/common/screen/gamemenu/gfx/vignetting.png

...ets/cs/screen/gamemenu/gfx/bankovniloupez_startbutton.png

...creen/gamemenu/gfx/bankovniloupez_startbutton_pressed.png

core/assets/cs/screen/gamemenu/gfx/bankovniloupez_title.png

core/assets/cs/screen/gamemenu/gfx/helplayer.png

...ets/cs/screen/gamemenu/gfx/nocnisledovani_startbutton.png

...creen/gamemenu/gfx/nocnisledovani_startbutton_pressed.png

core/assets/cs/screen/gamemenu/gfx/nocnisledovani_title.png

core/assets/cs/screen/gamemenu/gfx/office.jpg

core/assets/cs/screen/gamemenu/gfx/potme_startbutton.png

...sets/cs/screen/gamemenu/gfx/potme_startbutton_pressed.png

core/assets/cs/screen/gamemenu/gfx/potme_title.png

...ets/cs/screen/gamemenu/gfx/pronasledovani_startbutton.png

...creen/gamemenu/gfx/pronasledovani_startbutton_pressed.png

core/assets/cs/screen/gamemenu/gfx/pronasledovani_title.png

core/assets/cs/screen/gamemenu/gfx/strelnice_startbutton.png

.../cs/screen/gamemenu/gfx/strelnice_startbutton_pressed.png