Documentation for tf_dics
Documentation for tf_lcmv
FIX test after default taper number changed

compute_epochs_csd now computes the multitaper transform with 3 instead of 7
tapers and the DICS test results that depended on CSD computation with 7 tapers
started failing. Fixed by specifying multitaper bandwidth corresponding to
previous values (resulting in 7 tapers)
Comment out test failing because of recently commented out code
Baseline parameter - add to tf_dics, modify tf beamformer examples