add search for title authur subject
add comments for script
add more comments
major refactor of prospector button code to handle search index types and to handle quoted search strings
pull search type/arg from form fields again.

Reverted to using the form fields for type an argument to allow for a button href update whenever there was a change but not a page submit. Also allowed for better handling of special characters, spaces, etc. The button is now on the bibdisplay page - it grabs the title from the page - throws away anything after a forward slash, and strips out any non alphanumeric characters from what's left. Then it wraps that in quotes and submits it to prospector as a phrase keyword search. This commit also includes some improvements to the sematics of various markup and minor css changes.