Added language direction row to i18n.csv file.

src/js/i18n/i18n.csv

@@ -1,5 +1,6 @@
 ,String code,English,French,Arabic,Bulgarian,Chinese,Chinese (Simplified),Czech,Dutch,Estonian,German,Greek,Hungarian,Icelandic,Indonesian,Italian,Japanese,Korean,Latvian,Lithuanian,Polish,Portuguese,Portuguese (Brazilian),Russian,Slovak,Spanish,Thai,Turkish,Ukrainian,Vietnamese
 Language code,%lang-code,en,fr,ar,bg,zh,zh-Hans,cs,nl,et,de,el,hu,is,id,it,ja,ko,lv,lt,pl,pt,pt-BR,ru,sk,es,th,tr,uk,vi
+Language direction, %lang-dir,ltr,ltr,rtl,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr,ltr
 Language name (English),%lang-eng,English,French,Arabic,Bulgarian,Chinese,Chinese (Simplified),Czech,Dutch,Estonian,German,Greek,Hungarian,Icelandic,Indonesian,Italian,Japanese,Korean,Latvian,Lithuanian,Polish,Portuguese,Portuguese (Brazilian),Russian,Slovak,Spanish,Thai,Turkish,Ukrainian,Vietnamese
 Language name (French),%lang-fra,anglais,français,arabe,bulgare,chinois,chinois (simplifié),tchèque,néerlandais,estonien,allemand,grec,hongrois,islandais,indonésien,italien,japonais,coréen,letton,lituanien,polonais,portugais,portugais (brésilien),russe,slovaque,espagnol,thaï,turc,ukrainien,vietnamien
 Language name (native),%lang-native,English,Français,العربية,български език,繁體字,繁体字,čeština,Nederlands,eesti keel,Deutsch,ελληνικά,magyar,íslenska,Bahasa Indonesia,Italiano,日本語,한국어,latviešu valoda,lietuvių kalba,język polski,português,português do Brasil,русский язык,slovenčina,español,ภาษาไทย,Türkçe,Українська мова,tiếng Việt