docs(guide): fix typo

Closes #10511
fix(orderBy): compare timestamps when sorting date objects

Fixes #10512
Closes #10516
docs(api/index): grammar is important and so should you

I changed the word "into" to "within".
Original description underneath ngAnimate reads: "Use ngAnimate to enable animation features into your application".
I changed the text to read: "Use ngAnimate to enable animation features within your application".
The change in wording makes the description read better and gives it a more professional feel.

Closes #10517
docs(guide/$location): improve formatting
docs(guide/index): add book Responsive Web Design with AngularJS

This book explores the AngularJS features that can help a developer for building a responsive application.

Merçi beaucoup~

Closes #10513
docs(changelog): release notes for 1.3.8 prophetic-narwhal
docs($http): fix typo

Closes #10534