We can see read only icon next to the status icon in the tree when the page is read-only in Magnolia 4.5 (not only website tree).
We should visualize this also in Magnolia 5.

Investigation: already implemented, but:

1. It's disabled by default
2. It's buggy:

   Caused by: java.security.AccessControlException: add_node,remove,set_property
   	at org.apache.jackrabbit.core.SessionImpl.checkPermission(SessionImpl.java:708)
   	at info.magnolia.jcr.wrapper.DelegateSessionWrapper.checkPermission(DelegateSessionWrapper.java:109)
   	at info.magnolia.jcr.wrapper.DelegateSessionWrapper.checkPermission(DelegateSessionWrapper.java:109)
   	at info.magnolia.jcr.wrapper.DelegateSessionWrapper.checkPermission(DelegateSessionWrapper.java:109)
   	at info.magnolia.ui.workbench.column.StatusColumnFormatter.generateCell(StatusColumnFormatter.java:97)
   	at com.vaadin.ui.Table.parseItemIdToCells(Table.java:2312)
   	at com.vaadin.ui.Table.getVisibleCellsNoCache(Table.java:2173)
   	at com.vaadin.ui.Table.refreshRenderedCells(Table.java:1694
   

3. If enabled and fixed, status icon overlaps permission icon.