Store cache trackables for really offline usage

[arcao]

Requested by TwoWheeler89 (http://forum.asamm.cz/viewtopic.php?p=10374#p10374):

At the moment Locus in cache dialog can show trackables but when is touched on a trackable in list the internet browser is opened with link to trackable page.

For really off-line usage it would be good if G4L could catch the link and open own dialog with stored information about trackable.

[Dasmark]

I second this wish. C:GEO displays trackables in a nice format. It would be even better if we could convert the route that trackables have travelled so far into Locus-tracks, so they could be displayed on the map.