v1.22.7

-- Improve speed of loading when using distributed data storage by avoiding loading and frreing memory for each acquisition file, instead only loading current element's acquisition
-- Simplify code that sets the data storage scheme in DataTreeClass
-- Clean up and simplify code in DataTreeClass that handles loading multiple groups.
-- Add one more config value option for "% Data Storage Scheme" to mean distributed data storage: 'file'
-- Add capability to resetGroupFolder to delete all .mat files from distributed data storage and 'nodatatree' option to avoid loading dataTree if it's not needed such as in a unit test
-- Fix hmrR_StimRejection_Nirs.m to accept empty tIncMan