Open Moduler Turrets compatibility

[tksnt]

This PR closes #292 #287

• Modify isCreatureType to return what's expected.
• Modify build.gradle to build, and update versions as same as MultiMob.
• Rename lang files which should be lower case.

[tksnt]

Tested on MC Eternal 1.3.51 = 1.3.5b.

[neilometer]

This would be a nice fix.