Update translations, and add 21 of them

po/LINGUAS

@@ -1,20 +1,27 @@
 ar
+as
+az
 bg_BG
 bn_IN
 ca
 ca@valencia
 cs
+cy
+da
 de
 el
 en_GB
 eo
 es
+et
+eu
 fa_IR
 fi
 fr
 fo
 ga
 gl
+gu
 he
 hi
 hr
@@ -22,11 +29,20 @@ hu
 id
 it
 ja
+ka
 kk
+kn
 ko
 lt
 lv
+ml
+mr
+ms
+nb
 nl
+nn
+oc
+or
 pa
 pl
 pt_BR
@@ -34,12 +50,17 @@ ro
 ru
 sk
 sl
+sq
 sr
 sr@latin
 sv
+ta
 te
+th
 tr
 uk
+vi
 wa
 zh_CN
+zh_HK
 zh_TW