Merge pull request #205 from Gallaecio/master

Regenerated the POT file (1 new string) and completed/reviewed/fixed som...
Made the Enemy sprites fall to simple movement mode when failing at finding a path.

But also move random when not chasing the player or following way points.

This permitted to lower the pathfinding cost and get no fps decrease at all
on my own, while keeping the benefits of pathfinding where relevant.
Added support for basic collision checking at the scripting level.
Added a rolling stone for future use. ;)
Added stone triggers needed along with the rolling stones.
Added the next two maps (still WIP) and polished the first two.
Added missing landing sounds when jumping.
Fixed the Shroom sprite collision height for later use.
Added support for detecting collision between two specific map objects at the scripting level.
Added support to trigger a ... trigger only through events.
Finished the second elbrus grotto map.
Added new portraits from Anthony44. Thanks a lot to him :D
Added a trigger sound.
Added a stone bump sound effect.
Added the missing stone roll sound effect.
Removed the silence at the end of the normal battle music.
Fixed the rain particle effect declaration file.
Added rain particle effect on elbrus path1 and added missing local variables definitions.
Added new dialogue when the rain starts in the second elbrus path map.
Added missing speed and binary stripping options in the C::B project file for release compilation.

Thanks to @logzero for poiting out. :)