Document filters and directives.
Merge pull request #27 from drabinowitz/document

Document filters and directives.
Add autofocus tag to search input element.
Merge pull request #28 from drabinowitz/loadFocus

Add autofocus tag to search input element.
Store cart/shortlist in localStorage.
Merge pull request #30 from drabinowitz/localStorageShortlist

Store cart/shortlist in localStorage.
Use used price if there's no new price for Amazon.
Clarify comments.
Merge branch 'amazon-bug' of https://github.com/jDeppen/TechnoSave into amazon-bug

Conflicts:
	js/api-amazon.js