implement thubnail loading from tmdb

fix lots of errors if ' char occurs in path strings
correct reverse proxy for websocket

deb/OpenMediaCenter/etc/nginx/sites-available/OpenMediaCenter.conf

@@ -16,4 +16,11 @@ server {
     location ~* ^/(api/|token) {
         proxy_pass http://127.0.0.1:8081;
     }
+    location /subscribe {
+        proxy_pass http://127.0.0.1:8081;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "Upgrade";
+        proxy_set_header Host $host;
+    }
 }