[https:]]

Ich schreib mal kurz dazu, was vor allem von bdduke und hulkman programmiert wurde:
- PlacedBy and Owner values are separated handled now for Groundspeak GPXs.
- Change FilterProperties to Owner instead of PlacedBy. And also separate Owner and PlacedBy for ExportGpx.
- support multiple imports of same GPXs.
- "red questionmark" by corrected coordinates in map
- do not overwrite CorrectedCoordinates with PQ-Import
- fix Absturz bei Suche - ID: 3101324
- corrected a problem with the image download when the image doesn't exist, and the directory didn't exist