Added QETApp::collectionCache() for the currently unique SQLite cache to be usable by most classes.

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/branches/0.3@1489 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/qetapp.cpp

@@ -296,6 +296,13 @@ QList<ElementsCollection *> QETApp::availableCollections() {
 	return(coll_list);
 }
 
+/**
+	@return the collection cache provided by the application itself.
+*/
+ElementsCollectionCache *QETApp::collectionCache() {
+	return(collections_cache_);
+}
+
 /**
 	@return the common title block templates collection, i.e. the one provided
 	by QElecrotTech