Using QtSql instead of sqlite3 to access data -- might change this back but trying to set up a good data model.

Also subclassed QListView so we can eventually implement fading by age in the list view.

python/CMakeLists.txt

@@ -42,6 +42,7 @@ GR_PYTHON_INSTALL(
     modes_raw_server.py
     modes_sbs1.py
     modes_sql.py
+    modesfadinglistview.py
     Quaternion.py
     DESTINATION ${GR_PYTHON_DIR}/air_modes
 )