enhancement - added cfg.reducerank option to ft_dipolefitting, default is 2 for meg and 3 for eeg. Previously it would have defaulted to 3 for either case, but for meg it would pick up a lot of noise on the radial (most silent) dipole orientation. 


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@9865 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0