Fixes #2238

[int2001]

Fixes Issue #2238

Implements a dropdown for Stationlocations when importing eQSL manually
eQSL: Checks if Station_callsign of the QSO matches with Call provided by dropdown (and User)
LotW: Checks if station_id of the QSO matches with Call and grid provided by LotW-Download
Some background-checks (mantra: Never trust userinput)

[AndreasK79]

@int2001 from what I can tell, the code looks ok. Can't really test the import stuff myself, but I guess @phl0 can report back.

[magicbug]

Agree looking at the code it seems OK, I'd want to triple-check that lotw manual changes has zero effect on the cronjob

[int2001]

@magicbug : Checked the eQSL-Sync-Cron (i think you meant the eQSL-Downloader, there's no LotW-Cron for download) a few minutes ago.
Works well. Grabbed an eQSL-Card and updated the QSO here.

Upload also works well - i didn't changed anything regarding the upload (neither LotW nor eQSL).
But lets wait for @phl0 and @AndreasK79 - triple check, you know ;)

Update: Also tested the (undocumented) LotW-Download-Cron-Thing. Also works well. Confirmation was downloaded and updated to the correct user/QSO

[magicbug]

I did indeed, brain fart :)