gui, man, authors: Update docs, translations, and contributors

AUTHORS

@@ -130,6 +130,7 @@ Keith Turner <kturner@apache.org>
 Kelong Cong (kc1212) <kc04bc@gmx.com> <kc1212@users.noreply.github.com>
 Ken'ichi Kamada (kamadak) <kamada@nanohz.org>
 Kevin Allen (ironmig) <kma1660@gmail.com>
+Kevin Bushiri <36192217+keevBush@users.noreply.github.com>
 Kevin White, Jr. (kwhite17) <kevinwhite1710@gmail.com>
 klemens <ka7@github.com>
 Kurt Fitzner (Kudalufi) <kurt@va1der.ca> <kurt.fitzner@gmail.com>
@@ -147,6 +148,7 @@ Marc Pujol (kilburn) <kilburn@la3.org>
 Marcin Dziadus (marcindziadus) <dziadus.marcin@gmail.com>
 marco-m <marco.molteni@laposte.net>
 Marcus Legendre <marcus.legendre@gmail.com>
+Mario Majila <mariustshipichik@gmail.com>
 Mark Pulford (mpx) <mark@kyne.com.au>
 Mateusz Naściszewski (mateon1) <matin1111@wp.pl>
 Mateusz Ż <thedead4fun@live.com>
@@ -168,6 +170,7 @@ Nate Morrison (nrm21) <natemorrison@gmail.com>
 Nicholas Rishel (PrototypeNM1) <rishel.nick@gmail.com> <PrototypeNM1@users.noreply.github.com>
 Nico Stapelbroek <3368018+nstapelbroek@users.noreply.github.com>
 Nicolas Braud-Santoni <nicolas@braud-santoni.eu>
+Nicolas Perraut <n.perraut@gmail.com>
 Niels Peter Roest (Niller303) <nielsproest@hotmail.com> <seje.niels@hotmail.com>
 Nils Jakobi (thunderstorm99) <jakobi.nils@gmail.com>
 Nitroretro <43112364+Nitroretro@users.noreply.github.com>