Adding ability to prevent reverse geocoding

This adds a new option to the data type which allows you to prevent reverse geocoding of lat/long searches which causes the given lat/long to be changed. This is especially useful if the client has given you an excel spreadsheet containing a list of lat/long values pointing to the middle of the Scottish countryside. :imp: 

Also fixed popup scrollbars appearing on infowindow.



Apologies for the formatting issues. I can't get it to play nice.