Enable SQL queries in mini-profiler

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Gemfile

@@ -167,7 +167,7 @@ group :development do
   gem "annotate", "~> 2.6.0.beta2"
   gem "letter_opener"
   gem 'quiet_assets', '~> 1.0.1'
-  gem 'rack-mini-profiler'
+  gem 'rack-mini-profiler', require: false
   # Better errors handler
   gem 'better_errors'

config/initializers/6_rack_profiler.rb

+# If Mini Profiler is included via gem
+if Rails.env == 'development'
+  require 'rack-mini-profiler'
+
+  # initialization is skipped so trigger it
+  Rack::MiniProfilerRails.initialize!(Rails.application)
+end