Improved exceptions

Many exceptions got an improvement due to changed class or description or details it is providing.
Is not complete, needs to be done in patches in the regions, where it is needed, since some are just
swallowed.

Removed total usage of pure RuntimeExceptions to 0.

src/main/java/appeng/container/AEBaseContainer.java

@@ -154,7 +154,7 @@ public abstract class AEBaseContainer extends Container
 		this.obj = anchor instanceof IGuiItemObject ? (IGuiItemObject) anchor : null;
 
 		if( this.tileEntity == null && this.part == null && this.obj == null )
-			throw new RuntimeException( "Must have a valid anchor" );
+			throw new IllegalArgumentException( "Must have a valid anchor, instead " + anchor + " in " + ip );
 
 		this.mySrc = new PlayerSource( ip.player, this.getActionHost() );
 
@@ -380,7 +380,7 @@ public abstract class AEBaseContainer extends Container
 			return super.addSlotToContainer( newSlot );
 		}
 		else
-			throw new RuntimeException( "Invalid Slot for AE Container." );
+			throw new IllegalArgumentException( "Invalid Slot [" + newSlot + "]for AE Container instead of AppEngSlot." );
 	}
 
 	@Override