adding filter and boolean commads for functions

Rather than commenting out (or deleting) some of the processes I changed
to user controlled with true/false statements. I also added the filter
back in and updated the filtering file
changed input

changed how the input function see's how many feet are in the trial.
New 'master' filtering file

Created a new file that takes either a struct or a matrix and filters
around NaN row's. Has built in butter and critically damped coeffecient
generators