Fixed an issue with texture animations

Fixed an issue where a blank TP url would disable texture animations.
Revert "Fixed an issue with texture animations"

This reverts commit e55d5b04bb4f6955184153cfcf8950627047d033.
Fixed an issue with texture animations
Avoided rendering render pass 2 twice.
Merge pull request #250 from umby24/master

Lets try this again
Merge pull request #252 from UnknownShadow200/PerfFixes

Avoided rendering chunks in render pass 2 twice.
Merge pull request #253 from fragmer/master

Improvements to SkinDownloadThread
Reverted LiquidBlock to how it was before to fix a render type glitch