Problem
Same as https://github.com/gtt-project/redmine_gtt/pull/275, default ResourceItem position value should not be 0, but nil.
This causes unstable order editing in /projects/{project identifier}/(asset|human)_resource_items views.
Expectation
Default ResourceItem position value should be nil, and ResourceItem order editing should work correctly.
Problem Same as https://github.com/gtt-project/redmine_gtt/pull/275, default ResourceItem position value should not be 0, but nil. This causes unstable order editing in
/projects/{project identifier}/(asset|human)_resource_items
views.Expectation Default ResourceItem position value should be nil, and ResourceItem order editing should work correctly.