Allow authenticated users can edit, trash,and add new in BuddyPress Emails function

## Description: Allow author can edit, trash,and add new your posts in BuddyPress Emails function And editor can edit,trash, add new any posts in BuddyPress Emails default. ## Steps To Reproduce: Step 1 : Create two accounts: Admin and Author Step 2: Login with admin account. In admin account, give author to admin account. Step 4: Login with author within dashboard Access link: *domain/wp-admin/edit.php?post_type=bp-email* Step 5: Revoke author to author privilege in admin account Step 6: Within author dashboard, author can edit, trash,and add new PoC by video: https://bit.ly/2UH7iLz ## Recommendations Valid user current session access. ## Impact Author can edit, trash,and add new in BuddyPress Emails. And editor can edit,trash, add new any posts in BuddyPress Emails default.