NEW FILES

Execute program file is execute_program_apl2.py.
execute_program_apl2.py calls all the other files to analyse all files
(application 1 and 2 in one!).

Program ask the directory where all data is (files with or without BF).
In dictionary.py is the directory used to save all calculated values and
plots.
If you press "OK" without writing the first directory, it goes to the
default directory.

QUESTION:
Do I need to ask the directories where the user wants to save all
calculated data?