upload v1.7.2 image links

Merge pull request raspiblitz#2614 from rootzoll/dev

v1.7.1 sd card images & donation pages

Merge branch 'v1.7' of https://github.com/rootzoll/raspiblitz into v1.7

v1.6.3 release links

push 1.6.2 release links

Docs for v1.6.1 release (raspiblitz#1693)

Fix nginx BTCPay websocket Notifications requests and also BTCPayServ…

…er Vault request (not in Tor) (raspiblitz#1539)

Merge branch 'v1.5' of https://github.com/rootzoll/raspiblitz into v1.5

rebasing with master

merge with master