make the title of main page follow localization

source/files/index.html

@@ -24,7 +24,7 @@
       <div class="nav-wrapper cyan darken-2">
         <a id="title-center" href="#" class="brand-logo center hide-on-med-and-down" style="display: block;">
           <img width="60" height="60" style="vertical-align:middle;" src="./img/v-cercle.svg"/>
-          <span style="vertical-align:middle; display:inline;">ViĞnette</span>
+          <span style="vertical-align:middle; display:inline;">__MAIN_TITLE__</span>
         </a>
         <div class="brand-logo left">
           <a href="#" data-target="nav-mobile" class="sidenav-trigger valign-wrapper">
@@ -34,7 +34,7 @@
               <line x1="4" y1="12" x2="20" y2="12" />
               <line x1="4" y1="18" x2="20" y2="18" />
             </svg>
-            <p>&nbsp;ViĞnette</p>
+            <p>&nbsp;__MAIN_TITLE__</p>
           </a>
         </div>
         <!-- menu -->