Update SOGoRootPage.wox

Ensure the TOTP input field only accept number, so it is quicker to type on mobile devices.
Disable history of the TOTP input, which is not necessary.

See https://bugs.sogo.nu//view.php?id=5524

UI/Templates/MainUI/SOGoRootPage.wox

@@ -163,7 +163,7 @@
                     <md-input-container class="md-block">
                       <label><var:string label:value="Verification Code"/></label>
                       <md-icon>lock</md-icon>
-                      <input type="text"
+                      <input type="number" autocomplete="off"
                             ng-pattern="app.verificationCodePattern"
                             ng-model="app.creds.verificationCode"
                             ng-required="app.loginState == 'totpcode'"