Merge branch 'master' into prettier-1.7

* master: (34 commits)
  Revert "Make csslint complain about many more things"
  Revert "Only use ASCII characters in comments"
  Disable Emoji fear ✍ 🙌 (no idea if those are going to work)
  mimic calendar's refreshing behavior in student-orgs
  Make csslint complain about many more things
  Revert "Remove trailing commas from actions"
  Disable trailing comma in literals (arrays)
  Add RuboCop as a development dependency
  Wrap contents of hash in spaces
  Collapse one-line if statement
  Only use ASCII characters in comments
  Use single quote instead of double quotes
  Add coding: utf-8 to some files
  Mark unused variables as unused
  Remove trailing commas from actions
  Disable symbol proc check
  Disable predicate method check
  rubocop: Ignore all paths in node_modules
  Disable documentation check
  Prefer single-quotes in Gemfile
  ...

Author: hawkrives

.codeclimate.yml

@@ -11,7 +11,6 @@ engines:
       - ruby
       - javascript
       - python
-      - php
   eslint:
     enabled: true
     channel: "eslint-4"
@@ -21,6 +20,7 @@ engines:
     enabled: true
   rubocop:
     enabled: true
+
 ratings:
   paths:
   - Gemfile.lock
@@ -32,5 +32,6 @@ ratings:
   - "**.php"
   - "**.py"
   - "**.rb"
+
 exclude_paths:
 - node_modules/