Small fixes and QoL Improvements

Changed

• Fixed naming issue on the new Move Items context menu introduced on [2.3.7]
• Renamed Delete Item to Remove Item on the context menu
• Updated the Confirmation for the Removal of items, now ask if you just want to remove the reference, remove the reference and delete the asset or cancel the operation
• Exposed OnEnable and OnDisable from the CollectionCustomEditor to be overriden by other editors

What's Changed

• Fix on context menu and other small fixes by @brunomikoski in #165

Full Changelog: v2.3.7...v2.3.8