Split etherpad URI into host and baseUrl

So it works in recent FF instead of trying to speak to SignalMaster SocketIO server

public/js/vroom.js

@@ -1126,7 +1126,8 @@ function initVroom(room) {
   // Load etherpad in its iFrame
   function loadEtherpadIframe(){
     $('#etherpadContainer').pad({
-      host: etherpad.uri,
+      host: etherpad.host,
+      baseUrl: etherpad.path,
       padId: etherpad.group + '$' + room,
       showControls: true,
       showLineNumbers: false,

templates/default/join.html.ep

@@ -439,7 +439,11 @@
         setTimeout(function(){
           etherpad = {
             enabled: <%= $etherpad %>,
-            uri: "<%= $config->{'etherpad.uri'} %>",
+            <%
+              my $ethuri = URI->new($config->{'etherpad.uri'});
+            %>
+            host: "<%= $ethuri->scheme . '://' . $ethuri->authority %>",
+            path: "<%= $ethuri->path . '/p/' %>",
             group: "<%= $etherpadGroup %>"
           };
           <% if ($video eq 'false'){ %>

vroom.pl

@@ -18,6 +18,7 @@ use Etherpad::API;
 use Session::Token;
 use Config::Simple;
 use Email::Valid;
+use URI;
 use Data::Dumper;
 
 app->log->level('info');