Some plugin manager error checking and tweaks.
Vanilla species shouldn't be secret
Fix #209. Hardened plugin loading. IC2 machines load only with IC2
Fix #213: Crash on bee checking for valid biome
Revert "Fix #209. Hardened plugin loading. IC2 machines load only with IC2"

This reverts commit 2986536e66bf81cb95bd818daf0aaa5a3ca45e06.
Fixed PluginIC2 crash and moved IC2 machines into the plugin
Fixed permissions for restricted and private access
Fix #215. Allow Trade Station Automation
Fix #220. More robust world object for FarmLogic
Fix #219: Viewing Beelyzer slot 3 crashes game
Fix #214: Managed Arboretum does not consume dirt
Merge branch 'master' into redstoneflux
Some tree farm optimizations.
Merge branch 'master' into redstoneflux