Cleaned up markup and some assertions
Removed comment in JSON, fixed grammar
fixed small typo in note
fixed links to screen orientation API
fixed a few issues with icons processing
Editorial change for how to process icon sizes
Fixed typo and simplified sizes algorithm
removed protocol from Respec.
removed <br> elements from example.
rewrote Display Modes section
fixed typo in header links
Added definition and link to ES's HasOwnProperty
First link element in tree order.
Ignore hreflang, type, sizes and media attributes.
Do not fire a load/error event.
Merge pull request #182 from w3c/typos

Fixed some typos, broken links, etc.
Note about relationship to Fullscreen API (closes #172)
Small editorial cleanup
small fixes

* fixed missing link to "parsing"
* clarified that the parsing error should be reported to the developer
Use manifest URL as the base URL (closes #191)