Programatically generate slide elements.

Rather than hand roll the slides directly into the example markup, use
a for loop to mass produce slides, so that the content can be quickly
changed around.
Introduce slide label element attribute.

Need a means by which to associate each ‘frame’ in the ‘filmstrip’ with
its corresponding slide, for the benefit of the user. So
“deckard-slide-label” will be defined on every slide and the system
will emblazon that value on the frame.
Start to separate optional style from core style.

Maintain the core/functional style in deckard.css and separate out
exemplar style into individual example stylesheets and corresponding
example markup pages.
Remove frame highlight delay.

The frame highlight delay was originally introduced to appease IE7
slightly, because it marginally improved the smoothness of animation.
But it inadvertently makes it look like it is struggling when it is
not, and besides I have given up on IE7.
Make more examples.

Change the original deckard.html into another examples page, namely a
photostream/album example, as example2.html. Also some small
modifications to the other example, example1.html.
Merge branch '20141106A'
Merge from 20141106A.

Merge the changes made in the said branch to master.