Protection against a rare NPE

http://openeye.openmods.info/crashes/a7282839c7d95f404e4ab430c894b166
Update ru_RU.lang
Merge pull request #10 from Adaptivity/patch-1

Update ru_RU.lang
Made diminishing returns work on Minecraft cake (in block form)

Closes #11
Create de_DE.lang
Merge pull request #12 from Vexatos/patch-1

Create de_DE.lang
Create zh_CN.lang
Merge pull request #14 from crafteverywhere/patch-1

Create zh_CN.lang
Merge branch 'master' of https://github.com/squeek502/SpiceOfLife into 1.7.x
Updated cake code for 1.7.x