Dev 2.0 bettermap autofit

[Joongho]

1. better map auto fit option / icon
   • Map is automatically fit when data is reloaded
     but, sometimes don't want to be fit
     So, add option for that, and add icon head panel for manual fitting.
2. better map default Lat/Lon value for avoiding error when no data

[aadel]

Nice! @Joongho Please squash your commits into a single one using git rebase

[Joongho]

I re-created PR #242