Incorporated mlActMan and Auto to tCCAGLM function

Now the function gets only the active long and short channels (that is determined by mlAct Mand and Auto) in tCCA filter calculation and regressor generation. Also changed ss_ch_inx to ss_ch_on, now user will choose whether ss channels should be included in tcca or not (not a list of channels).
Possible future issue: if different channels are active for the rest versus experimental run.