Fix for issue #529.

* replaced precondition with if-statement in class ChunkMeshInfo.
Merge branch 'develop' into monitoring
Merge branch 'develop' of https://github.com/MovingBlocks/Terasology into monitoring
Rename a Dev class to avoid a naming conflict in IntelliJ. This previewer hasn't actually worked for who knows how long anyway (wonder how long ago we deleted "Biomes.png" ..) - but don't want to start a deletion spree or anything
Miniscule fix for missing space in single player ui.
Fix for issue #532.
Merge #530 by @mbrotz to fix #529
Added DoubleClickListener to module dialog.
 Double clicking toggles mod selection.
fixed core mod toggle bug.
Merge pull request #1 from MovingBlocks/develop

Develop
Adventure-Mod ...:
-An invisible block
-TNT-Chest
-Trap Doors! Maybe something for the core module. Thanks to Janred for the shape!

Will soon expand this module, just wanted to share the current state.
Update settings.gradle
Implemented a watchdog for issue #534.
Merge pull request #540 from mbrotz/bugfixes

Implemented a watchdog for issue #534.
Add placeholdery Light & Shadow module. Also include two missing dirs in module dirs and tweak the applet jar lineup
Whoops, missed a spot. Copy paste never fails!
getBlockForPlacing
perBlockDamageBonus uses block categories and families.
This is maybe sufficient for #549. Also updated tool prefabs and some block json-definitions.
(Fixed a bunch of CheckStyle warnings as well).
Adds basic Oculus VR stereo rendering support - no lens correction yet but works quite well already! Crazy!
Fix for my previous commit (projection matrices were broken without Oculus VR support enabled).