CEGUI initialization
CEGUI Button
Merge branch 'dev' into dev-ui
Better CEGUI Button
Added special mode in scene for bots to build more buildings than they usualy can

Will be used in "Leaving Earth" missions for making decorative bots building base
CEGUI splashscreens
Added fall damage

+ changed window title
Fixed bug from a61da7404bf8430132864d493c7e75a6b4c3d978

Moved ExploObject to CPhysics::EventFrame, it shouldn't crash anymore.
Merge branch 'dev' into dev-ui
CScreen
Main menu test button
Made some improvements to fall damage from a61da740

Fall damage on:
- no energy
- overheat
Fall damage off:
- underwater
Replaced an old icon with a new one
Functional main menu
Merge remote-tracking branch 'origin/dev' into dev-ui
Fixed bug with fall damage

If you change the height after overheat, you get damage like you didn't change it at all. For example: overheat when you are 10 meters above the ground, and you fall to place 20 meters deeper, but you get the damage like you fell from 10 meters instead of 30. This commit fix this.
Merge remote-tracking branch 'origin/dev' into dev-ui
Fixed displaying of UTF-8 characters
Some code cleanup
More CEGUI in main menu