Revert "Revert "correct wrong redirection by adding  -""

This reverts commit 7a822c0da28fa716e9a01d84414f2a5ca1a6b28d.
Revert "add tests, LSYNC-18"

This reverts commit 141978e38dcca4c0bdb450dfc5e13e2a24109408.
Revert "add migration script, LSYNC-18"

This reverts commit eb22cd2f36ee256f0fa550b5c04df0925735c894.
Revert "begin test, LSYNC-18"

This reverts commit 05d44ea59eaf79e8868a11a0802136356a4cbbd5.
Revert "update userProvider, LSYNC-18"

This reverts commit 75fbf8ba9c0f3d011934c4520c6d67dfecbdc244.
Revert "add api for handle user, LSYNC-18"

This reverts commit 85f169217331e11d5213ff7cb6a5baa183f851a0.