Portal 2: Community Edition 0.6.10 released to playtest_beta

• Added dark theme for panorama debugger

• r_portal_fastpath defaults to 0 now

dx11 changes:

• Fixed laser field texture animation (https://github.com/StrataSource/Engine/issues/299 )

• Fixed tint mask texture being ignored with bumpmap and phong (https://github.com/StrataSource/Engine/issues/297 )

• Fixed certain parts of models not rendering (https://github.com/StrataSource/Engine/issues/296 )

• Fixed catwalk transparency(https://github.com/StrataSource/Engine/issues/295 )

• Fixed treesway being weird (https://github.com/StrataSource/Engine/issues/98 )