Support data packages sent from another user

[CoryFoy]

Is your feature request related to a problem? Please describe.
Users can sent data packages and KML/KMZ files, which transmits a CoT message. The app should recognize these messages and import the data package or KML automatically

Split off as an individual feature from #12

[miniwg]

I am having the same issue with version 1.1
I can send the data package from wintak, but get a failure to send error in wintak. On tak aware if I use download from server I can download the data package, but the enclosed image does not display.

[CoryFoy]

@miniwg Thanks for the info! A couple of things you're probably running into:

1. We don't support incoming data packages yet, but are planning to for 1.3
2. We don't yet support image overlays or PDF overlays, but that's also on the docket for 1.3

Sorry for the delay - working on making things happen as quickly as possible!