Directory handling

[arnodelorme]

The default directory should always be the derivative folder created by LIMO. There should be an option to go back to that folder instead of creating new folder in the current folder.

When a test already exists "one_sample_ttest", it should create a new directory and inform the user.

Every time a directory is created the user should be notified.

[CPernet]

you may want to overwrite, so instead it asks what to do - it a design choice, I do not agree with you

[arnodelorme]

Are you OK if I implement an option in that sense? You can enable or disable it.

[CPernet]

i mean it's the default in the GUI for the last 5 years -- but of course command line will overwrite 100% of the time -- we could move the code from the GUI ~https://github.com/LIMO-EEG-Toolbox/limo_tools/blob/master/limo_random_effect.m#L279 into https://github.com/LIMO-EEG-Toolbox/limo_tools/blob/master/limo_random_select.m#L98 - but now there will be a pop up (your favourite I know) even if you don't use GUI, or we need yet an extra parameter in limo_random_select