Added missing jbuilder

This was the reason why JSON output was incorrectly formatted.

Gemfile

@@ -41,7 +41,7 @@ gem 'jquery-rails'
 gem 'turbolinks', '~> 5'
 
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
-#gem 'jbuilder', '~> 2.5'
+gem 'jbuilder', '~> 2.12'
 
 # Use Redis adapter to run Action Cable in production
 # gem 'redis', '~> 3.0'

Gemfile.lock

@@ -190,6 +190,9 @@ GEM
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     jaro_winkler (1.6.0)
+    jbuilder (2.12.0)
+      actionview (>= 5.0.0)
+      activesupport (>= 5.0.0)
     jquery-rails (4.6.0)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
@@ -513,6 +516,7 @@ DEPENDENCIES
   guard-minitest
   guard-rails
   image_processing
+  jbuilder (~> 2.12)
   jquery-rails
   listen (~> 3.5)
   mini_magick

app/controllers/json_controller.rb

@@ -3,27 +3,23 @@ class JsonController < ApplicationController
   def package
     expires_in 1.hours, public: true
     @p = Package.find_by_name! params[:name]
-    render json: @p
   end
 
   # JSON information on all packages
   def packages
     expires_in 1.days, public: true
     @p = Package.all
-    render json: { packages: @p }
   end
 
   # JSON information on all screenshots
   def screenshots
     expires_in 1.days, public: true
     @s = Screenshot.approved.includes(:package)
-    render json: { screenshots: @s }
   end
 
   # JSON list of packages that do not have screenshots
   def packages_without_screenshots
     expires_in 1.hours, public: true
     @p = Package.without_screenshots.all
-    render json: { packages: @p }
   end
 end