[[ Bug 19941 ]] Use label preference when opening PI

The preference for property inspector labels was renamed but the
old mechanism retained for backwards compatibility. The PI was
not using the new name to set the old preference on opening.

(cherry picked from commit dc7f303)

Author: livecodeali

Toolset/palettes/inspector/revinspectortemplate.livecodescript

@@ -8,6 +8,7 @@ on preOpenStack
    put ideObjectTypesFromObjectList(sSelectedObjects) into sObjectTypes
    revIDESubscribe "idePropertyChanged",sSelectedObjects
    inspectorTitleUpdate
+   inspectorSetLabelsPreference
 
    # Set the inspector behaviour
    dispatch "setAsBehavior" to revIDEInspectorBehavior() with the long id of me
@@ -238,18 +239,21 @@ on editorStoreValue pProperty, pValue
 end editorStoreValue
 
 on idePreferenceChanged pPreference
-   local tValue
-   put revIDEGetPreference(pPreference) into tValue
    switch pPreference
       case "idePropertyInspector_labels"
-         global gRevLanguageNames
-         put tValue into gRevLanguageNames
-         set the cLanguageNames of cd 1 of stack "revPreferences" to tValue
+         inspectorSetLabelsPreference
          inspectorChanged
          break
    end switch
 end idePreferenceChanged
 
+command inspectorSetLabelsPreference
+   local tValue
+   put revIDEGetPreference("idePropertyInspector_labels") into tValue
+   global gRevLanguageNames
+   put tValue into gRevLanguageNames
+   set the cLanguageNames of cd 1 of stack "revPreferences" to tValue
+end inspectorSetLabelsPreference
 
 # Sent by the IDE when a property has changed
 on revIDEPropertyChanged