[FIX,PYOPENMS] fix pyOpenMS after #889
Merge pull request #943 from hroest/fix/pyopenms_fix

[FIX,PYOPENMS] fix pyOpenMS after #889
[BUILD,FIX] adopt Python extension with new Path

- use new path starting with ./src in Python extension checker
[FIX] fix pxd map of Python extension checker
[BUILD,NOP] extract method
[BUILD,DOC] doc improvements to Python checker
[FIX] fix crash
Merge pull request #944 from hroest/fix/pyopenms_parser_fix

[FIX,TOOLS] pyopenms parser fix
[BUILD] fix extension checker
[PYOPENMS] add additional functions
[PYOPENMS] wrap additional classes
[PYOPENMS] wrap additional classes and functions
[TEST] pyOpenMS tests
Merge pull request #945 from hroest/feature/pyopenms_wrap

[FEATURE] pyopenms wrap improved