add debugging printfs for importapi s3 uploads.. sigh
add more debugging for import api
import openlibrary.tasks differently, try to get celery to work
Updating seeds database is taking too long. Mark them as dirty instead of updating them.

Will update them via a separate script.
Don't invoke update_solr task. It is dummy anyway.
Fixed pagination for admin/tasks.
Skeleton couchdb tombstone
Added Graphite graphs.
Storing records properly now in couch
sync infogai.

Changes:
* Provided a way to specify default model class.
Treat serialisation errors differently
Made graphite_base_url a config setting instead of hardcoding it.
Cache history sinppet.

Enabled with `superfast` feature flag.
Cache lists of book/work/author.
Avoid fetching editions of a work.

Using `$if page.edition_count` instead of `$if page.editions` avoids the
expensive query.
store a uuid in the loan so that the loan can be uniquely identified.

Required for stats.
Query for loan only if the book is borrowed.

Borrowed status can be found from a memcache-able query, which is usally
very fast. This avoids making expensive infobase query for each book.
identity bug fixes and add covers
Avoid checking for loan-status when the book is not part of inlibrary or lendinglibrary.
solr work identifier fixes