merge trunk in 0.9.18

dev version bump, for 'stable' commits please use 0.9.18 branch

disable this block since it doesn't fit star's new graphic. doesn't show up often anyway, since unc0rr changed gst clearing

use VideoItem::prefix instead of VideoItem::name as suggested by Stepan777

tweaked hedgehog sprite (gstLoser and such) this version tries to clean up a bit of the pixelation from having not been edited in inkscape

Change messages a bit

Mutant script

Fix training script positions altered by variable land dimension change. issue #453

Fix 440, used 'grave' rather than '`' in default binds

darken and contrast the gray images to distinguish more easily from pink

Arbitrarily tweaked to not firepunch loose, and to increase chance of bazooka doing it to about 20%

Improve TestSniperRifle a bit

Allow cleavers to be knocked loose by explosions. Probabilities might need tweaking.

boo, koda

this commit is a no-op

close engine shortcut, from the discussion in issue #317

disable fps widget when recording

add videorec button descriptions and delete screenshot when video is deleted (issue #427)

apparently we are forced to use a (dummy) callback for glut 3.0 compatibility

increase framerate and bitrate (issue #427)

double cleaver rotation speed, also make spin direction dX dependent.

Slight update of russian translation

Choose first unused color for added team (addresses issue #431) + other small changes

add SDL as an dependency

let animation objects delete themselves after they are not being used anymore PS: I don't like that we create new animation objects every single time before a page transition is done, I'm sure that can be done in a nicer way. But at least we're not keeping those non-reused objects around forever now...

revert tremor back to a version before koda broke it ;p

more like here

merge Medo's GSoC work

Workaround for visual bug. issue #442

merge hedgeroid branch with tip