[110] JinWuxia & GaoYan: add service support for all users listing for admin.
[110] JinWuxia & GaoYan: add view support for all users listing.
[108] YangMeng~ & GaoYan: method name modification and test improvement for password change.
GaoYan: modification to eliminate some test warning.
GaoYan: bug fix in UserRoleMapper.java.
GaoYan: merge after conflict in UserControllerTest.java.