Created mailer for System reminders
Created message bodies awaiting dependency on link to next problem
Fixed mail subject
add fb_graph gem and facebook.yml config
Issue #264, removing unnecessary old files
Issue #264, creating the Executer model and writing the methods
Issue #264, creating a folder for the submited codes
added fb initializer config and simple fb controller
Issue #264, taking the input from the problem page and executing
added FB SDK for JS config
added route, added feed method to SDK
added more options to feed method
Issue #264, styling the outputed messages
Issue #264, check the validity of the input
removed system_reminders.rb belonging to the other branch
removed reminder_email.html.erb belonging to the other branch
removed facebook.rb from initializers
removed unnecessary facebook.yml config
removed fb_graph gem
removed fbgraph code in facebook controller