added DataStore.updateTask()

DataStore.py

@@ -85,6 +85,17 @@ VALUES (0, ?, ?)
         c.close()
         self.conn.commit()
 
+    def updateTask(self, taskid, name, longname):
+        c = self.conn.cursor()
+        c.execute('''
+UPDATE tasks
+SET name = ?, longname = ?
+WHERE id = ?
+''', (name, longname, taskid))
+        c.close()
+        self.conn.commit()
+        return True
+
     def getTaskByID(self, taskid):
         t = None
         c = self.conn.cursor()