First update pass (1/3) - ~1400 -> 82 errors

This is first update pass, which is mainly import reorganization, name
fixes, etc... Although some parts of second were done where changes
aren't important.
Errors: ~1400 -> 82.

src/main/java/appeng/core/AELog.java

@@ -26,7 +26,7 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.message.ParameterizedMessage;
 
-import net.minecraft.util.BlockPos;
+import net.minecraft.util.math.BlockPos;
 
 import appeng.core.features.AEFeature;
 import appeng.tile.AEBaseTile;