More notes, faked event coordinates, touch explore

Included more notes - such as highlights for accessibility, as outlined
in recent blog post
http://blog.paciellogroup.com/2014/04/javascript-touchpointer-events-research-notes-screenreaders-faked-mouse-events-touchscreens/
- and links to interesting bugs.

New section for faked event coordinates.

Included Opera 12 spatial navigation in desktop browser+AT section, for
reference of faked event coordinates.

Turns out touch explore on mobile does weird stuff with events that was
not apparent when just testing gestures.

Corrected minor errors from previous results.