[FIX] fixed wrong dialogs in emzed.io.storeXYZ
[FIX] fixed proposed file extensions im emzed.io.storeCSV
backup
[CLEANUP]
bakcup
[FIX] fixed modified behaviour of openms metabo ff for mz column
Merge branch 'sandbox' of github.com:uweschmitt/emzed2 into sandbox

Conflicts:
	sandbox/feature_grouping.py