Move the Wiki* models into the IDF_Wiki_* namespace and adapt all models,

table names and relations accordingly.
Start with a resource and resource revision model and add migrations for
that as well.
Note in NEWS.mdtext that we need a more recent Pluf version to take
advantage of the MySQL introspection implementation.

src/IDF/Migrations/7Wiki.php

@@ -22,14 +22,14 @@
 # ***** END LICENSE BLOCK ***** */
 
 /**
- * Add the download of files.
+ * Add wiki functionality.
  */
 
 function IDF_Migrations_7Wiki_up($params=null)
 {
     $models = array(
-                    'IDF_WikiPage',
-                    'IDF_WikiRevision',
+                    'IDF_Wiki_Page',
+                    'IDF_Wiki_PageRevision',
                     );
     $db = Pluf::db();
     $schema = new Pluf_DB_Schema($db);
@@ -42,8 +42,8 @@ function IDF_Migrations_7Wiki_up($params=null)
 function IDF_Migrations_7Wiki_down($params=null)
 {
     $models = array(
-                    'IDF_WikiRevision',
-                    'IDF_WikiPage',
+                    'IDF_Wiki_PageRevision',
+                    'IDF_Wiki_Page',
                     );
     $db = Pluf::db();
     $schema = new Pluf_DB_Schema($db);