Localization fixes, ME Fluid Level Emitter Fixes, Updated gradlew

1. Replaced AE1 localizations with AE2 localizations where possible.
2. Fixed #74 
3. Updated gradlew to version 2.0 (Else it wouldn't build properly in java 8, gradle exits with a NPE.)
4. Fix #74 
5. Added missing call to draw redstone mode button tooltip.
6. Fixed partEnum so that getStatName() actually gets the name.

@DrummerMC, The tooltip for the redstone mode button seems to have its position very off, can you take a look at that please? See #129 for what I mean.