A step toward speeding up sparql queries

[nein09]

This can at least make what's on search-dev shippable to production.

What I found was two things:

• ?catalog ?relationship ?s . is by far the most expensive thing in that query - it takes the most time, by orders of magnitude, so I changed things around so that it is called fewer times.
• FILTER( CONTAINS(?author, '''{author}''')) . was taking a long time because ?author is optional. Changing it to FILTER(BOUND(?author) && CONTAINS(?author, '''{author}''')) . to check whether ?author even exists first helped. Check whether ?author is bound and minimize calls for an expensive statement

[nein09]

This has been deployed to search-dev. If it does well today, it can go out to prod.