added scan-polarity filter to FileFilter; RangeUtils speed improvement by 24% via XOR; minor fixes
Merge pull request #896 from cbielow/lipids

[FEATURE] added scan-polarity filter to FileFilter
(feature for Windows developers) added a small Windows .reg file, which allows to change file extensions on Windows to another OpenMS instance
Merge pull request #897 from cbielow/develop

(feature for Windows developers) added a small Windows .reg file