fixes #461

Some of our build files and resource files are licensed as that, but not
our actual code. This leads to funny issues, that GNOME software
considers Nheko proprietary. To work around that, just put GPL there.

Fixes https://github.com/flathub/io.github.NhekoReborn.Nheko/issues/1

Currently translated at 25.7% (142 of 552 strings)

Translated using Weblate (Polish)

Currently translated at 25.7% (142 of 552 strings)

Co-authored-by: AXD <dexkingcrazy@gmail.com>
Co-authored-by: Stanisław Borowy <stabor7@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/pl/
Translation: Nheko/nheko

Add repo sync command for Gentoo distro users

Extend FAQs

Currently translated at 88.7% (490 of 552 strings)

Co-authored-by: DeepBlueV7.X <nicolas.werner@hotmail.de>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/de/
Translation: Nheko/nheko

Accept Backtab and Shift-Tab for hovering selection backwards

This fixes spaces or stickers not showing up for old databases as well
as the wrong format of the state_keys db.

Currently translated at 100.0% (552 of 552 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

Fix minor display bugs with emoji completer

Currently translated at 88.5% (489 of 552 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

Clear emoji search field when picker closed

see: https://github.com/vector-im/element-ios/issues/2353

Currently translated at 100.0% (542 of 542 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

As well as selecting more join rules.