change ActiveSupport::SecureRandom to SecureRandom in orbit core

lib/orbit_core_lib.rb

@@ -140,7 +140,7 @@ module  OrbitCoreLib
     
     protected
      def generate_token
-       self.s_token = ActiveSupport::SecureRandom.hex(16)
+       self.s_token = SecureRandom.hex(16)
        self.save!
      end
   end