Update Redcarpet to version 3
Regroup Gemfile
Configure BetterErrors to use pry
Register :success and :error flash types

Fixes #140
Add Hash#merge_class
Use ActiveRecord 4 store accessors

Fixes #137
Upgrade Draper to 1.3
CarrierWave + S3 & all questions can have images

Fixes #138
Fixes #114
Don't ignore the bin/ folder
Add .rspec
Lektire => Kvizovi for emailing exceptions