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/me/cache/NetworkMonitor.java

@@ -140,6 +140,6 @@ public class NetworkMonitor<T extends IAEStack<T>> extends MEMonitorHandler<T>
 
 		final NetworkMonitor<?> last = DEPTH.pop();
 		if( last != this )
-			throw new RuntimeException( "Invalid Access to Networked Storage API detected." );
+			throw new IllegalStateException( "Invalid Access to Networked Storage API detected." );
 	}
 }