reload config on each poll

lib/app.js

@@ -46,6 +46,17 @@ module.exports = function(options) {
 
   app.use(express.bodyParser());
 
+  var reloadConfigMiddleware = function(req, res, next) {
+    lamassuConfig.load(function(err, config) {
+      if (err) {
+        logger.error('Error while reloading config');
+        return next(err)
+      }
+      plugins.configure(config);
+      next();
+    });    
+  };
+  
   var authMiddleware;
 
   if (options.https) {
@@ -91,6 +102,7 @@ module.exports = function(options) {
     lamassuConfig: lamassuConfig,
     plugins: plugins,
     authMiddleware: authMiddleware,
+    reloadConfigMiddleware: reloadConfigMiddleware,
     mock: options.mock
   });