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
feat(limitTo): ignore limit when invalid

BREAKING CHANGE: limitTo changed behavior when limit value is invalid.
Instead of returning empty object/array it returns unchanged input.

Closes #10484