Allow force ignoring of non-staff users by user-group(s).
Applies on viewing thread list and searching posts/threads
Applies on viewing a thread
Option "'View shadow banned posts' custom field id" (default value 'viewShadowBannedPosts') controls the custom-field which is used to support opt-ing out of shadowbanned posts.
Recommend Custom Fields Permissions add-on to control access to this field.
Option to skip various forums from having the shadow ban function...
