Clean prerequisites and fix css outline for tabs

scripts/install

@@ -29,21 +29,8 @@ firmware_nonfree=${5}
 
 if ! $upgrade; then
 
-  # Check YunoHost version
-  ynh_version=$(sudo dpkg -l yunohost | grep ii | awk '{ print $3 }' | sed 's/\.//g')
-  
-  if [ "${ynh_version}" -lt 220 ]; then
-    echo "ERROR: You need a YunoHost version equals or greater than 2.2.0" >&2
-    exit 1
-  fi
-  
-  sudo systemctl is-active dnsmasq &> /dev/null
-  
-  if [ $? -ne 0 ]; then
-    echo "ERROR: You need to enable dnsmasq instead of bind9 (apt-get remove bind9 && systemctl start dnsmasq)" >&2
-    exit 1
-  fi
-  
+  source ./prerequisites
+
   # Check arguments
   if [ -z "${wifi_ssid}" -o -z "${wifi_passphrase}" ]; then
     echo "ERROR: Your Wifi Hotspot needs a name and a password" >&2