Add email translation, add part of french translations

Admin translation from @Killianbe, Email translation from
@Cornichon420. French is currently not functional, a few things are
missing which i'm waiting on.

mail/created.mjml

@@ -20,26 +20,25 @@
     <mj-section mj-class="bg">
       <mj-column>
         <mj-text mj-class="text" font-size="16px" font-family="Noto Sans, Helvetica, Arial, sans-serif">
-          <h3>User Created</h3>
-          <p>A user was created using code {{ .code }}.</p>
+            <p>{{ .aUserWasCreated }}</p>
         </mj-text>
         <mj-table mj-class="text" container-background-color="#242424">
           <tr style="text-align: left;">
-            <th>Name</th>
-            <th>Address</th>
-            <th>Time</th>
+              <th>{{ .name }}</th>
+              <th>{{ .address }}</th>
+              <th>{{ .time }}</th>
           </tr>
           <tr style="font-style: italic; text-align: left; color: rgb(153,153,153);">
-            <th>{{ .username }}</th>
-            <th>{{ .address }}</th>
-            <th>{{ .time }}</th>
+            <th>{{ .nameVal }}</th>
+            <th>{{ .addressVal }}</th>
+            <th>{{ .timeVal }}</th>
         </mj-table>
       </mj-column>
     </mj-section>
     <mj-section mj-class="bg2">
       <mj-column>
         <mj-text mj-class="secondary" font-style="italic" font-size="14px">
-          Notification emails can be toggled on the admin dashboard.
+            {{ .notificationNotice }}
         </mj-text>
       </mj-column>
     </mj-section>