MISC-3: Adjust the cdnforjoomla plugin to optionally translate to a .onion

# diff -u cdnforjoomla.xml.org cdnforjoomla.xml
--- cdnforjoomla.xml.org        2015-05-19 15:37:08.957712726 +0100
+++ cdnforjoomla.xml    2015-05-19 15:36:37.692710748 +0100
@@ -34,6 +34,9 @@
                                <field name="@block_cdn_1_a" type="nn_block" start="1" />
                                <field name="root" type="text" size="60" default="/" label="CDN_SITE_ROOT" description="CDN_SITE_ROOT_DESC" />
                                <field name="cdn" type="text" size="60" default="" label="CDN_DOMAIN" description="CDN_DOMAINS_DESC" />
+                               <field name="onion" type="text" size="60" default="" label="Onion Domain" />
+                               <field name="onion_header" type="text" size="60" default="" label="Onion Header" description="If this header is present, URLs will be translated to the Onion domain rather than the CDN domain (HTTPS will also be disabled in the output URL)" />
+
                                <field name="enable_https" type="radio" class="btn-group" default="0" label="CDN_ENABLE_HTTPS" description="CDN_ENABLE_HTTPS_DESC">
                                        <option value="0">JNO</option>
                                        <option value="1">JYES</option>

# diff -u helper.php.org helper.php
--- helper.php.org      2015-05-19 15:39:01.105718443 +0100
+++ helper.php  2015-05-19 15:51:52.960723647 +0100
@@ -132,7 +132,17 @@
                }
                $params->enable_versioning = $this->params->{'enable_versioning' . $setid};
 
-               $params->cdn = preg_replace('#/$#', '', $this->params->{'cdn' . $setid});
+
+               $onion_header=strtoupper(str_replace("-","_",$this->params->{'onion_header'}));
+
+               if (!empty($this->params->{'onion'}) && isset($_SERVER['HTTP_'.$onion_header]) && $_SERVER['HTTP_'.$onion_header] == ':true'){
+                       $params->cdn = preg_replace('#/$#', '', $this->params->{'onion'});
+                       $params->protocol = 'http://';
+               }else{
+                       $params->cdn = preg_replace('#/$#', '', $this->params->{'cdn' . $setid});
+               }
+
+#                $params->cdn = preg_replace('#/$#', '', $this->params->{'cdn' . $setid});
                $params->ignorefiles = explode(',', str_replace(array('\n', ' '), array(',', ''), $this->params->{'ignorefiles' . $setid}));
 
                $root = preg_replace(array('#^/#', '#/$#'), '', $this->params->{'root' . $setid}) . '/';