add number_metabomatching_permutations as an option

[mattiat]

In metabomodules.py “number_metabomatching_permutations” variable is hardcoded please add it to parsers’ argument as it is impossible to change it for users using the docker. Also add a warning if it is set to less than 9999 that for the filtering to be reliable this variable should be set to 9999.

[mattiat]

I don't think we should allow end users to change this. Why allowing them to change it and them warning them they should not?

[mattiat]

@BKhalili can you explain your motivation?

[BKhalili]

Right now it is 99 in the code. I think you should allow for the change if a user wants to have a quick check. Like in our case that we want to check the code and results.

[BKhalili]

There is an error when trying to run the docker and changing the number of permutations.
In line 176 of metabomodules.py when printing the warning str(number_metabomatching_permutations) should replace number_metabomatching_permutations.

[mattiat]

Fixed, thanks!