Added assets:precompile in upgrade guide 5.4 -> 6.0
Created by: stayallive
Same as #4833 with an extra line break to follow previous guides and without changing the whole file.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: stayallive
Same as #4833 with an extra line break to follow previous guides and without changing the whole file.