Rework AccessPolicy and ReplicationPolicy editing
1. Move "Edit XXX Policy..." from the Documentation menu into File menu.
2. Add "Inherit from package" checkbox to the main edit page.
2a. Check the box if the data files all share the same access/replication policies as for the EML object
2b. If it is unchecked (policies differ) then display info message when it is checked my the user ("Existing Policy for the data object[s] will be overridden by changes made here")
3. Make the "Success" pop up message more pleasing (right now it looks like an error/warning box because it reuses the same mechanism for displaying warnings to the user).