simplify .gitignore
simplify .gitignore

- add new non-python files with 'git add -f'

sfepy/sfepy,vlukes/sfepy,vlukes/sfepy,BubuLK/sfepy,rc/sfepy,vlukes/sfepy,rc/sfepy,sfepy/sfepy,BubuLK/sfepy,sfepy/sfepy,rc/sfepy,BubuLK/sfepy