Update everything

.browserslistrc

@@ -0,0 +1 @@
+defaults

.gitignore

@@ -2,3 +2,11 @@
 db/*.sqlite3
 log/*.log
 tmp/
+/public/system
+/public/uploads
+/public/packs
+/public/packs-test
+/node_modules
+/yarn-error.log
+yarn-debug.log*
+.yarn-integrity

.rubocop.yml

@@ -0,0 +1,28 @@
+require:
+  - rubocop-performance
+  - rubocop-rails
+
+AllCops:
+  TargetRailsVersion: 6.0
+  TargetRubyVersion: 2.7
+  NewCops: enable
+  Exclude:
+    - 'bin/*'
+    - 'db/**/*'
+    - 'node_modules/**/*'
+    - 'public/**/*'
+    - 'tmp/**/*'
+    - 'vendor/bundle/**/*'
+
+Layout/LineLength:
+  Enabled: false
+
+Metrics/BlockLength:
+  Exclude:
+    - 'config/**/*'
+
+Rails/HasAndBelongsToMany:
+  Enabled: false
+
+Style/Documentation:
+  Enabled: false

Gemfile

@@ -1,22 +1,47 @@
-source 'http://rubygems.org'
-
-gem 'rails', '~> 3.1'
-gem 'cancan'
-gem 'devise', '~> 1.4'
-gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
-gem 'mlb', '~> 0.5'
-gem 'paperclip', '~> 2.4'
-gem 'mini_magick'
-gem 'carrierwave'
-gem 'dragonfly'
-group :production do
-  gem 'pg'
-end
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+ruby '2.7.2'
+
+gem 'rails', '6.0.3.4'
+
+gem 'bootsnap', '~> 1.4', require: false
+gem 'puma', '~> 5.0'
+
+gem 'webpacker', '~> 5.2'
+
+gem 'cancancan', '~> 3.1'
+gem 'carrierwave', '~> 2.1'
+gem 'devise', '~> 4.7'
+gem 'dragonfly', '~> 1.2'
+gem 'kt-paperclip', '~> 6.3'
+gem 'mini_magick', '~> 4.10'
+gem 'mlb', '~> 0.7.0'
+gem 'paper_trail', '~> 11.0'
+gem 'paper_trail-association_tracking', '~> 2.1'
+gem 'rails_admin', github: 'sferik/rails_admin'
+
+gem 'sassc-rails', '~> 2.1'
+gem 'uglifier', '~> 4.2'
+
 group :development, :test do
-  gem 'sqlite3'
+  gem 'sqlite3', '~> 1.4'
 end
-group :assets do
-  gem 'sass-rails', '~> 3.1'
-  gem 'coffee-rails', '~> 3.1'
-  gem 'uglifier', '~> 1.0'
+
+group :development do
+  gem 'listen', '~> 3.2'
+  gem 'rubocop', '~> 1.0', require: false
+  gem 'rubocop-performance', '~> 1.8', require: false
+  gem 'rubocop-rails', '~> 2.8', require: false
+  gem 'spring', '~> 2.1'
+  gem 'spring-watcher-listen', '~> 2.0'
+  gem 'web-console', '~> 4.0'
 end
+
+group :production do
+  gem 'pg', '~> 1.2'
+end
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]