Global media & Tags for all users (staff account inheritance issue) about cloud-platform

[cocarrig]

Only for account-holder(defined by main account subscription level=Pro) or staff member type accounts:

• Add new option to the kebab-menu of a Personal tag: "Move to All Staff Tags" (An irreversible operation)
• Display "All Staff Tags" and "Personal Tags" sections anywhere tag lists show up

Add a new "Staff Tags" section under "Settings" Permissions tab, with the following options following current designs for other privileges:

• (C)reate allows "Move to All Staff Tags" menu option to show
• (U)pdate allows renaming of Staff Tags
• (D)elete allows removal of Staff Tags
  Note: (R)ead is always permitted for all members, so no toggle

[Dan-Peck]

Workaround:

Existing shared media may not show in the list for newer staff members due to initial staff permission defaults having a small variable-type issue that causes the User Media page to fail recognizing the Media View permission having been set. While a correction is being prepared, account administrators may navigate to the new staff account permissions settings and click "Save". This re-save operation will correct the type issue on that account and allow the staff member to see all existing shared media.

[Dan-Peck]

Merged in @ 82e42ff and added to the queue for upcoming release to the live site.
Once released, there will be a new Staff Accounts Settings option for them to migrate their tags into "Global" tags, and then manage them globally while that privilege is enabled on their account.