Dependencies: Update to current flask
Layout: updates

- Remove the left sidebar and move it below the map
- Remove background color from the sidebar
Dev run script: listen to localhost only
API: Shorter field names in returned JSON data

- trip_id -> t_id
- position_id -> p_id
- longitude -> lon
- latitude -> lat
- pos_erroneous -> pos_bad
- all ground_speed prefixes to gs_
- all water_speed prefixes to ws_
- depth_erroneous -> d_bad
- pos_time_utc -> t_utc