[JIRAALIGN -1770] Admin System Role Permissions: Saving Feature permission doesn't allow users to link features to parents

Issue Summary

System role permission on feature "add" controls the ability to "link" a feature to a parent. Despite if they have save permissions on the feature or parent item.

Steps to Reproduce

1. Step 1 - Disable add system role permission on features
2. Step 2 - enable save permissions on features & parent (Epic or Capability)
3. Step 3 - Attempt to link a feature from the parent work item 

Expected Results

Per PM: save should allow you to parent existing features (like making any other edit)

Actual Results

Users can't link features (I would assume this applies to all work items)

Workaround

User will have to link to the parent item directly from the feature not at the higher level.