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/util/item/AEFluidStack.java

@@ -24,6 +24,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
+import javax.annotation.Nonnull;
 
 import io.netty.buffer.ByteBuf;
 
@@ -60,15 +61,12 @@ public final class AEFluidStack extends AEStack<IAEFluidStack> implements IAEFlu
 		this.myHash = is.myHash;
 	}
 
-	private AEFluidStack( FluidStack is )
+	private AEFluidStack( @Nonnull FluidStack is )
 	{
-		if( is == null )
-			throw new RuntimeException( "Invalid Itemstack." );
-
 		this.fluid = is.getFluid();
 
 		if( this.fluid == null )
-			throw new RuntimeException( "Fluid is null." );
+			throw new IllegalArgumentException( "Fluid is null." );
 
 		this.stackSize = is.amount;
 		this.setCraftable( false );