Ensure that PEP gets fixed after an upgrade

src/freedombone-app-xmpp

     cd /var/lib/prosody/prosody-modules
     hg pull
     hg update
+
+    # change to using profile rather than pep and vcard modules
+    if grep '"pep"' /etc/prosody/prosody.cfg.lua; then
+        if grep '"vcard"' /etc/prosody/prosody.cfg.lua; then
+            sed -i 's|"pep"|"profile"|g' /etc/prosody/prosody.cfg.lua
+            sed -i '/"vcard"/d' /etc/prosody/prosody.cfg.lua
+        fi
+    fi
 }
 
 function upgrade_xmpp_server {