davfs2 check incompatible

[Atoms]

Hello,

on Centos 6.5 installed davfs2 and ./box-sync check gives error about davfs2 not installed, checked source and found bug in setup.py on line 62

for davfs_file in ['/usr/sbin/mount.davfs', '/sbin/umount.davfs', '/etc/davfs2/davfs2.conf']:

should be

for davfs_file in ['/sbin/mount.davfs', '/sbin/umount.davfs', '/etc/davfs2/davfs2.conf']:

fixed in file and check run smootly.