make functional tests for context controller run

lib/tracks/config.rb

@@ -0,0 +1,27 @@
+module Tracks
+  class Config
+    def self.salt
+       SITE_CONFIG['salt']
+    end
+
+    def self.auth_schemes
+       SITE_CONFIG['authentication_schemes'] || []
+    end
+    
+    def self.openid_enabled?
+      auth_schemes.include?('open_id')
+    end
+
+    def self.cas_enabled?
+      auth_schemes.include?('cas')
+    end
+
+    def self.prefered_auth?
+      if SITE_CONFIG['prefered_auth']
+        SITE_CONFIG['prefered_auth']
+      else
+        auth_schemes.first
+      end
+    end
+  end
+end