merging all the open issues
improving responsiveness
fix element box-sizing
"Loose Typing" section: Several grammatical fixes

Replaced “Web 2.0-ish applications” with “modern web applications”,
hyphenated terms like “back-end” and “client-side”, fixed typo
pertaining to pool metaphor.
"Patterns" section: Rephrased section lead-in
Merge pull request #81 from stackptr/latest

Fixed phrasing and grammar in Loose Typing and Patterns sections
Adjust user div size
Merge pull request #85 from mkautzmann/latest

TJ's user badge not centralized
Add Web Platform and MDN links
Merge pull request #87 from mkautzmann/latest

Add Web Platform and MDN links
Add initial game engines section
Add Learn Javascript Properly link
Merge pull request #90 from ellisonleao/latest

Add initial game engines section
adds game-engine section to main menu
Merge pull request #91 from cored/learning-javascript-properly

Add Learn Javascript Properly link
Add Goo engine on Game Engines
Merge pull request #92 from ellisonleao/latest

Add Goo engine on Game Engines
Fix typo in Chain of Responsibility
Merge pull request #95 from hermanschaaf/patch-1

Fix typo in Chain of Responsibility
Missing <ul>