Enqueue jQuery and Spine with wp_enqueue_scripts()

Removes the direct URLs from the header template so that they can
be managed as part of the larger WordPress ecosystem.
Leave jQuery in compatibility mode

I don't see any place where we need the $ alias for jQuery at this
time. We should focus on not using this and instead wrapping our
jQuery functionality properly for namespacing.

If something does need to be used inline, we can use jQuery()
Move the HTML5 shiv below wp_head()

This will ensure other scripts and styles are output in HEAD before
the shiv is found by IE
Enqueue the spine and theme styles with wp_enqueue_style()

Also documents the use of each enqueue.
Move enqueue of admin styles up with front-end scripts and styles
Make repo URLs in header scheme relative
Make the HTML5 shiv scheme relative
Introduce spine_get_script_version() to generate script versions

This builds a script version based on the current spine theme status
and, if available, the current version of WSUWP Platform and the
WordPress changeset that is currently in use.
Add another minor release to version

In a perfect world, we would bump this version every time we pushed
anything to production. Especially when there were script or style
changes that need to be forced.
Merge pull request #25 from washingtonstateuniversity/enhance/scripts

[PR] Enhance handling of scripts and styles in the parent theme