finished order tab view and customer tab

Gemfile

@@ -9,8 +9,8 @@ end
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.1.0'
 # Use mysql as the database for Active Record
-#gem 'mysql2', '>= 0.3.18', '< 0.5'
-gem 'pg'
+gem 'mysql2', '>= 0.3.18', '< 0.5'
+#gem 'pg'
 # Use Puma as the app server
 gem 'puma', '~> 3.0'
 # Use SCSS for stylesheets