PCT gpx update

files/db/update_v19_to_v20.sql

@@ -0,0 +1,5 @@
+ALTER TABLE messages MODIFY ref_msg_id VARCHAR(15) NOT NULL;
+ALTER TABLE messages ADD display BOOLEAN DEFAULT 1 AFTER weather_temp;
+
+UPDATE messages SET display = 0 WHERE id_message = 197;
+UPDATE messages SET display = 0 WHERE id_message = 216;