Refactor various ruby files

* Insights based on brakeman report

config/environments/staging.rb

@@ -60,7 +60,7 @@ Rails.application.configure do
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
-  # config.force_ssl = true
+  config.force_ssl = true
 
   # Set to :debug to see everything in the log.
   config.log_level = :info