Adds French in available languages.

index.html

     <script src="libs/popover.js?v=1"></script><!-- bootstrap tooltip lib -->
     <script src="libs/toastr.js?v=1"></script><!-- notifications lib -->
     <script src="interface_config.js?v=5"></script>
-    <script src="libs/app.bundle.js?v=77"></script>
+    <script src="libs/app.bundle.js?v=78"></script>
     <script src="analytics.js?v=1"></script><!-- google analytics plugin -->
     <link rel="stylesheet" href="css/font.css?v=7"/>
     <link rel="stylesheet" href="css/toastr.css?v=1">

lang/languages.json

     "bg": "Bulgarian",
     "de": "German",
     "tr": "Turkish",
-    "it": "Italian"
+    "it": "Italian",
+    "fr": "French"
 }

libs/app.bundle.js

     EN: "en",
     BG: "bg",
     DE: "de",
-    TR: "tr"
+    TR: "tr",
+    FR: "fr"
 }
 },{}],105:[function(require,module,exports){
 var XMPPEvents = {

service/translation/languages.js

     EN: "en",
     BG: "bg",
     DE: "de",
-    TR: "tr"
+    TR: "tr",
+    FR: "fr"
 }