Update translations

main/lang/english/trad4all.inc.php

@@ -2,6 +2,7 @@
 /*
 for more information: see languages.txt in the lang folder.
 */
+$SocialWallWhatAreYouThinkingAbout = "What are you thinking about?";
 $SocialMessageDelete = "Delete comment";
 $SocialWall = "Social wall";
 $BuyCourses = "Buy courses";

main/lang/french/trad4all.inc.php

@@ -2,6 +2,11 @@
 /*
 for more information: see languages.txt in the lang folder.
 */
+$SocialWallWhatAreYouThinkingAbout = "À quoi pensez-vous?";
+$SocialMessageDelete = "Supprimer le commentaire";
+$SocialWall = "Mur";
+$BuyCourses = "Achat de cours";
+$MySessions = "Mes sessions";
 $ActivateAudioRecorder = "Activer l'enregistreur audio";
 $StartSpeaking = "Parlez maintenant";
 $InverseHyperbolicTangentAtanh = "Tangente hyperbolique inverse:\tatanh(x)";

main/lang/spanish/trad4all.inc.php

@@ -2,6 +2,7 @@
 /*
 for more information: see languages.txt in the lang folder.
 */
+$SocialWallWhatAreYouThinkingAbout = "En que está pensando en este momento?";
 $SocialMessageDelete = "Eliminar comentario";
 $SocialWall = "Muro";
 $BuyCourses = "Comprar cursos";