Fix auto redirect for ipv6

This fixes the auto redirect for IPv6.  It was tested with the latest
Safari, Firefox and Chrome on Mac and the latest IE, Firefox and Chrome
on Windows.

sickbeard/webserve.py

@@ -66,7 +66,10 @@ def __init__(self, *args, **KWs):
         self.sbHttpPort = sickbeard.WEB_PORT
         self.sbHttpsPort = sickbeard.WEB_PORT
         self.sbHttpsEnabled = sickbeard.ENABLE_HTTPS
-        self.sbHost = re.match("[^:]+", cherrypy.request.headers['Host'], re.X|re.M|re.S).group(0)
+        if cherrypy.request.headers['Host'][0] == '[':
+            self.sbHost = re.match("^\[.*\]", cherrypy.request.headers['Host'], re.X|re.M|re.S).group(0)
+        else:
+            self.sbHost = re.match("^[^:]+", cherrypy.request.headers['Host'], re.X|re.M|re.S).group(0)
         self.projectHomePage = "http://code.google.com/p/sickbeard/"
 
         logPageTitle = 'Logs & Errors'
@@ -1943,6 +1946,8 @@ def is_alive(self, *args, **kwargs):
             return "Error: Unsupported Request. Send jsonp request with 'callback' variable in the query stiring."
         cherrypy.response.headers['Cache-Control'] = "max-age=0,no-cache,no-store"
         cherrypy.response.headers['Content-Type'] = 'text/javascript'
+        cherrypy.response.headers['Access-Control-Allow-Origin'] = '*'
+        cherrypy.response.headers['Access-Control-Allow-Headers'] = 'x-requested-with'
 
         if sickbeard.started:
             return callback+'('+json.dumps({"msg": str(sickbeard.PID)})+');'