Allow channel path to be customizable

We now allow server operators to customize the /r/ part of the channel links
The new config option in the template is commented and the config module validates and will terminate with status 78 if an improper value is used.
We've also dropped some old cruft and uses a more elegant method to assign CHANNEL.name

Resolves #668

templates/account-channels.pug

@@ -44,7 +44,7 @@ html(lang="en")
                             input(type="hidden", name="name", value=c.name)
                             button.btn.btn-xs.btn-danger(type="submit") Delete
                               span.glyphicon.glyphicon-trash
-                          a(href="/r/"+c.name, style="margin-left: 5px")= c.name
+                          a(href=`/${channelPath}/${c.name}`, style="margin-left: 5px")= c.name
             .col-lg-6.col-md-6
               h3 Register a new channel
               if newChannelError
@@ -57,7 +57,7 @@ html(lang="en")
                 .form-group
                   label.control-label(for="channelname") Channel URL
                   .input-group
-                    span.input-group-addon #{baseUrl}/r/
+                    span.input-group-addon #{baseUrl}/#{channelPath}/
                     input#channelname.form-control(type="text", name="name", maxlength="30", onkeyup="checkChannel()")
                   p#validate_channel.text-danger.pull-right
                 button#register.btn.btn-primary.btn-block(type="submit") Register

templates/channel.pug

@@ -11,7 +11,7 @@ html(lang="en")
         include nav
         +navheader()
         #nav-collapsible.collapse.navbar-collapse
-          - var cname = "/r/" + channelName
+          - var cname = `/${channelPath}/${channelName}`
           ul.nav.navbar-nav
             +navdefaultlinks(cname)
             li: a(href="javascript:void(0)", onclick="javascript:showUserOptions()") Options

templates/channeloptions.pug

@@ -86,7 +86,7 @@ mixin adminoptions
   #cs-adminoptions.tab-pane
     h4 Admin-Only Settings
     form.form-horizontal(action="javascript:void(0)")
-      - var defname = "CyTube - /r/" + channelName
+      - var defname = `CyTube - /${channelPath}/${channelName}`
       +textbox-auto("cs-pagetitle", "Page title", defname)
       +textbox-auto("cs-password", "Password", "leave blank to disable")
       +textbox-auto("cs-externalcss", "External CSS", "Stylesheet URL")

templates/head.pug

@@ -11,8 +11,16 @@ mixin head()
   link(href="/css/cytube.css", rel="stylesheet")
   link(id="usertheme", href=DEFAULT_THEME, rel="stylesheet")
 
-  script(type="text/javascript").
-    var DEFAULT_THEME = '#{DEFAULT_THEME}';
+  if channelName
+    script(type="text/javascript").
+      var DEFAULT_THEME = '#{DEFAULT_THEME}';
+      var CHANNELPATH = '#{channelPath}';
+      var CHANNELNAME = '#{channelName}';
+  else
+    script(type="text/javascript").
+      var DEFAULT_THEME = '#{DEFAULT_THEME}';
+      var CHANNELPATH = '#{channelPath}';
+
   script(src="/js/theme.js")
   //[if lt IE 9]
     <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>

templates/index.pug

@@ -25,7 +25,7 @@ html(lang="en")
               tbody
                 each chan in channels
                   tr
-                    td: a(href="/r/"+chan.name) #{chan.pagetitle} (#{chan.name})
+                    td: a(href=`/${channelPath}/${chan.name}`) #{chan.pagetitle} (#{chan.name})
                     td= chan.usercount
                     td= chan.mediatitle
           .col-lg-3.col-md-3
@@ -37,6 +37,6 @@ html(lang="en")
     script(type="text/javascript").
       $("#channelname").keydown(function (ev) {
         if (ev.keyCode === 13) {
-          location.href = "/r/" + $("#channelname").val();
+          location.href = "/#{channelPath}/" + $("#channelname").val();
         }
       });