[PYOPENMS,FIX] fixed static method decl AASequence.fromString
[PYOPENMS, FIX] fixed wrapping error in MetaInfo.getKeys
[PYOPENMS,FIX] fixed MRMRTNormalizer.removeOutliersRANSAC
[PYOPENMS,FIX] fixed tests due to commit 2bca6d0
[PYOPENMS,FIX] fixed missing conversion for DataValue::empty_VALUE
[PYOPENMS,FIX] fixed broken caused by 43f2230
Merge pull request #832 from uweschmitt/pyopenms_fix_decls

several pyopenms fixes + updates