Added fast link for sessionize and slack

Author: amengoli9

index.html

@@ -160,7 +160,8 @@ <h2 id="link-veloci">Link veloci</h2>
         <li><a href="http://meetup.com/DevRomagna">Entra nella community!</a></li>
         <li><a href="https://github.com/DevRomagna">DevRomagna su GitHub</a></li>
         <li><a href="http://facebook.com/DevRomagna">DevRomagna su Facebook</a></li>
-        <li><a href="http://facebook.com/DevRomagna">DevRomagna su Facebook</a></li>
+        <li><a href="https://sessionize.com/devromagna">DevRomagna su Sessionize</a></li>
+        <li><a href="http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpacyZCxtT2YRPoN1xvlDkAAI3Ft9g5Zx0pKR4IlB-2FWHzVIJvlHYzLEwgWnyDCL6MPsv1mJryU-2BPL5WZtmeex50SOnAp-2BOVrxyB6yeJlHgcuXoTIC_qUFE1sSfvoO6aPTPIl8CJSn0S75rZq4kmG7X2f1IDp1OzUZYaM28jIhmK6cxc9TkJLsgyh8kyR9F3ygDiRXPqkzKA7Viv58t0bi0CbpMmCNnvIb3dRDkRG7FzSg-2BsBpnoqOIej5j0wW2JDDcoD9ifp-2Fo84NBxwEOCS-2BWl8NQpv4Vw8recxKcLTQ341B2PRdYCv1lSufvqOd2r8dAFUisXwZAafgmmX88AXQPwnvCfhGrRcDSaDFUZkzm84-2Bj0lOFj5VM8us7JvMYRrhYIQGO57OLuQ6ESvBY19ObpkC69TNn1Yk-2B6lfY8fJfw6-2FyMVn3pbSJKVXQCFpBBWtF4UeBZvWGoRo-2F-2B0nm-2B37FxKVk3L-2FHbARFhFjYyE9juNPpdtxwZGO5NRmpaXRlM-2Bjt9wWOGvbQJTzo2nakQwk-2FNJbJ8NsrB1zrATcocjWuBOPNKa8dasyc7vd-2FCTPvCgQAoOMZ8feK3-2FqYMcdVsaa0c7XboJ3NAWYWn9QBQ-2F-2F3lLBgtELmRCH7rw2X62kYYve0xLv3AFl0yZlC6LZ4xhzaCGd8Q-2BJm3zTU2qaBiR2PH92fasCXGBhPg6eLNlEy5amduZBS36upYwDY2x12pVtDXdMtkM-2Be4zSIXaS9BktBa3iDDkwdCw0eySHISS4CrtVSk2fBNIur-2BIUWstwG3VPsnWeTxq8-3D">DevRomagna su Slack</a></li>
         <li><a href="/">DevRomagna.org</a></li>
       </ul>