elros34

Implement basic chat members completer and fix segfault on ui close

3

Amount of chat members for one query is limited to 200 by tdlib but that should be enough for usual use case.

fernschreiber overrides https:/ and tg:/ mime handlers

3

After first start fernschreiber creates harbour-fernschreiber-open-url.desktop in ~/.local/share/applications and run update-desktop-database as user thus all mime handlers which use x-scheme-handler/https (some apps) or x-scheme-handler/tg (depecher) and are installed in /usr/share/applications/...