Fixed height computation. Moved adding of gravity center
 shift, which probably fixed the problems we had with
 'wheels inside kart chassis' tests earlier.
Set the graphical suspension depending on physical suspension (capped).
Adjusted graphical chassis to be 0.1 higher to have similar look at previously
and avoid graphical chassis going into terrain,
Fixed shadows with a hack.
Removed artificial Y offset to allow evaluation of more karts.
Make the graphical y offset configurable (and basically disable
it for now by setting it to 0).
Fix suspension to some more realistic values.
Use sqrt(speed) to scale the collision impulse, which results in
weaker impulses when hitting the terrain.
Improved error message.
Merge branch 'master' of github.com:supertuxkart/stk-code
Merge remote-tracking branch 'origin/master' into no_floating

Conflicts:
	src/karts/kart.cpp
Added some debug output to get more info for #1464 (unnecessary download
of addon icons). To be removed later.
Merge branch 'no_floating'
Fixed some Log:: messages that used incorrect syntax and did not print
some variables. Made all log:: messages use the same components 'addons'.
Back to previous resolution when escape was pressed in confirm resolution dialog
Fixed onEscapePressed event in addons loading screen.

It actually was unused previously. I'm also not sure why there was assert(false) ?
Show console on windows only in debug mode
Register some api functions
Play with bindless textures
Merge branch 'master' of github.com:supertuxkart/stk-code
Fixed error message to correctly say that online user names needs to
be at least 3 characters long - though at this stage we need to
wait for the server to be updated as well, since it will now reject
a shorter user name.