Show ssh public key on about screen

src/freedombone-controlpanel

 }
 
 function show_ip_addresses {
-    echo 'IP/DNS addresses'
+    echo $'IP/DNS addresses'
     echo '================'
     echo ''
     echo -n "IPv4: $(get_ipv4_address)"
     echo ''
 }
 
+function show_ssh_public_key {
+    echo $'SSH Public Key'
+    echo '=============='
+    echo ''
+    echo "$(get_ssh_server_key)"
+    echo ''
+    echo ''
+}
+
 function show_about {
     clear
     echo ''
 
     clear
     show_ip_addresses
+    show_ssh_public_key
     show_domains
     show_mirrors_password
     show_tahoe_introducer