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
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).
Merge remote-tracking branch 'remotes/skaldarnar/blockCategories' into develop
Merge PR #539 from @MrBarsack - adventure time!

Conflicts:
	settings.gradle - two modules added from different sources

Also fixed the applet, which we broke again (replaced premature use of logger with RuntimeExceptions - thanks @immortius !)