Added hologram projection offset
Merge branch 'master' of https://github.com/ingie/OpenComputers
Renamed 'offset' to 'translation' to mirror general 3d/ogl terminology.
Added x/z translation for hologram.
Added setting for max translation based on tier.
Made max translation a relative value based on the actual hologram's size (1 = 1x hologram size).
Fixed GUIs being very dark / black sometimes.
Closes #546.
Merge branch 'master' of github.com:MightyPirates/OpenComputers into master-MC1.7.10

Conflicts:
	src/main/scala/li/cil/oc/common/tileentity/Hologram.scala