Merge branch 'goop-dampen' into 'next'

Goo Water (THZ Goop) adjustements

At Nev3r's request:
Adjusted goop so that you spend less time bouncing around in it. The goop will become a walkable surface with a higher velocity threshold.

The actual goop physics haven't been altered as far as the initial entrance and underwater time is concerned, only leaving goop and subsequent bounces has been dampened significantly.

See merge request !7