Created graphical application and fixed for some brother models

I created a graphical application in python, which uses original scripts. The scripts had to be modified slightly to provide additional hooks for the GUI application.
I added new algorithm into brother.py to work with patterns stored in memory using pointers. Original code did not work for my machine (Brother First Lady - similar to kh930 and kh940). The new algorithm should with all models which have similar format (kh930, kh940, kh950). As a source of documentation of memory format, I used https://github.com/stg/knittington/blob/master/doc/kh940_format.txt, which I copied into doc folder.

(Many files in test folders and docs were changed accidentally, it says that file mode was changed, maybe because I am working on WIndows. But I did not change the content of these files)