Issue 1979228 by sheena.peng, Alan D.: Make hook_nodeapi() signiture the same as the api docs.
update to fixe erroneous variable name
Made description clearer
Added UI setting for default display to show when viewing a diff, options are to show HTML tags or show as plain text
=Issue 1834750 by ottawadeveloper, Alan D.: Typo in the function diff_available_states().
=Updated ordering of the default diff table classes so that the changed line backgrounds showed.
=No issue by Alan D.: Defaulted non-supported fields to drupal html to text for the markdown callback.
=Issue 1831524 by hass, Alan D.: State URL parameter typo.
=Issue #971100 by mitchell, Alan D., kscheirer, et al: Inline block real name support.
=Issue #1831534 by hass: String review leftovers.
