Revert "Merge branch 'F_branch' into 'master'"

See merge request !3

This reverts commit 916658be

# Conflicts:
#   header.txt
#   latex_creator.py

Master

See merge request !1

# Conflicts:
#   header.txt
#   run.sh

MATLAB ads a string "MATLAB" to exported jpgs, which causes our script
to recognize it as matlab source code. Probably one should use
'xdg-mime query filetype' instead of 'file' and 'grep'

if verbose flag (-v) is set, python is execteud in serial