finish hashing tests default tip

add some copy/move tests

fix that file uploads are tried, when the content on the server is equal to the local file content (with enabled hashing)

fix hash based conflict detection

add first dav-sync hashing test

add more push conflict tests

add push conflict tests

add more pull conflict tests

don't print error in case rmdir fails because of ENOTEMPTY

rename conflict test script

(0) -300 -100 -10 tip