increase from 1500 ri 2500

increase from 1500 to 2500 to habdle the 2,5gb wan mtu

add jumbo frames

add jumbo frames to the ex 75pro

please add multi-link

@David-TP overall the new app works well i had one issue with qos not enbled when embled 2500 for ex75 pro & x50 everthing works well overall i would like very much to have channel control in the app...