Remove unnecessary entries, add '.config/'

.gitignore

@@ -1,81 +1,19 @@
-# Rails
-*.rbc
-capybara-*.html
-.rspec
-/db/*.sqlite3
-/db/*.sqlite3-journal
-/db/*.sqlite3-[0-9]*
-/public/system
-/coverage/
-/spec/tmp
-*.orig
-rerun.txt
-pickle-email-*.html
-
-# Ignore all logfiles and tempfiles.
-/log/*
-/tmp/*
-!/log/.keep
-!/tmp/.keep
-
-# Comment out this rule if you are OK with secrets being uploaded to the repo
-config/initializers/secret_token.rb
-config/master.key
-
-# Only include if you have production secrets in this file, which is no longer a Rails default
-# config/secrets.yml
-
-# dotenv, dotenv-rails
-.env
-.env*.local
-
 ## Environment normalization:
 /.bundle
 /.cache
+/.config
 /.gem
 /.local
-/vendor
 
 # These should all be checked in to normalize the environment:
 # Gemfile.lock, .ruby-version, .ruby-gemset
 
-# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
-.rvmrc
-
-# If using bower-rails ignore default bower_components path bower.json files
-/vendor/assets/bower_components
-*.bowerrc
-bower.json
-
-# Ignore pow environment settings
-.powenv
-
 # Ignore command history files.
 .bash_history
 .byebug_history
 .lesshst
 .viminfo
 
-# Ignore node_modules
-node_modules/
-
-# Ignore precompiled javascript packs
-/public/packs
-/public/packs-test
-/public/assets
-
-# Ignore yarn files
-/yarn-error.log
-yarn-debug.log*
-.yarn-integrity
-
-# Ignore uploaded files in development
-/storage/*
-!/storage/.keep
-/public/uploads
-
 # Jekyll
 /_site
-/.sass-cache
 /.jekyll-cache
-/.jekyll-metadata