localize many message from mail. re #53

lang/Localization_en.json

@@ -330,5 +330,7 @@
 "customize.paging":"Max number of books per page (-1 to disable)",
 "customize.email":"Set your email (to allow book emailing)",
 "customize.filter":"Enable tag filtering",
+"mail.messagenotsent":"Message could not be sent.",
+"mail.messagesent":"Message has been sent",
 "fin":"fin"
 }

lang/Localization_fr.json

@@ -125,5 +125,7 @@
 "customize.filter":"Filtrage via les étiquettes",
 "languages.eng":"Anglais",
 "languages.fra":"Français",
+"mail.messagenotsent":"Le message n'a pas pu être envoyé.",
+"mail.messagesent":"Le message a été envoyé",
 "fin":"fin"
 }