NEON-1141 Add field selectors for date, latitude, and longitude.
NEON-1141 Make the bar chart and map more robust when fields are not specified.
NEON-1141 Field mapping selects now populate when a preset is chosen, also added a header to the Custom Connection modal's field mapping section
NEON-1141 Added manual control of linechart fields
NEON-1141 Fixed line chart field config
Merge remote-tracking branch 'origin/neon-1141-user-configurable-metadata'