[Req] Next Seq screen - make Sudden latching

Please make the Sudden button latching, so I can release it and still remain in Sudden mode. This would let the user change sequences with both hands. Right now you need to hold the Sudden button down all the time

In the upper right where it says: END OF SEQUENCE
Change it to: IMMEDIATELY START or IMMEDIATELY PLAY
Press pad and it switches immediately without SUDDEN

ah, wonderful