CSV support

[routeconverter]

Dear all,

I've been planning it for years. And finally, with release 2.23 there is a first version of RouteConverter which is able to read and write CSV files encoded in UTF-8 and ISO Latin 1.

Since CSV file may have an arbitrary structure, RouteConverter needs information which column contains which type of data. Thus RouteConverter interprets the first line of a CSV file as a title for a columns that determines how the data in the columns should be interpreted.

The following column titles are currently supported:

• Breite, Breitengrad, Latitude - latitude in WGS84 format
  
• Länge, Längengrad, Longitude - longitude in WGS84 format
  
• Höhe, Altitude, Elevation - elevation in meters above sea level 
  
• Geschwindigkeit, Speed - speed in Km/h
  
• Zeit, Timestamp, Zeitstempel, Date, Datum, Time - date in format dd.MM.yy HH:mm:ss with UTC time zone
  
• Beschreibung, Comment, Kommentar, Description - comment 
  

Since the version 2.26 there is support for:

• Richtung, Kurs, Heading, Course - in degree from 0 bis 359
  
• Temperatur, Temperature - in degree Celsius
  
• Druck, Pressure - in millibar
  

Please test and report!

[trekopedia]

CSV import / export works for me using a simple track. Tested on MacOS High Sierra using preview v2.24.

Thanks for implementing this - very useful!