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

AUTHORS

@@ -233,6 +233,7 @@ Matteo Ruina <[email protected]>
 Maurizio Tomasi <[email protected]>
 Max <[email protected]>
 Max Schulze (kralo) <[email protected]> <[email protected]>
+maxice8 <[email protected]>
 MaximAL <[email protected]>
 Maxime Thirouin <[email protected]>
 Maximilian <[email protected]> <[email protected]>