* Track collections in Crawl rather than crawls in Collection
* Add delete collection API endpoint and tests
* Precompute collection crawlCount, pageCount, and tags and add them to
GET collection responses
* Add modified field to Collection
* Update collection replay.json method
* Make add and remove crawls accept list of crawl ids
* Auto-add new workflow crawls to collections when they successfully
complete via CrawlConfig.autoAddCollections field
* Move long-running post-crawl operator tasks into asyncio task
* Make CrawlConfig.autoAddCollections updatable via /update API endpoint
* Sort by name and description (ascending by default)
* Filter by name
* Add endpoint to fetch collection names for search
* Add collation so that utf-8 chars sort as expected
* Re-implement collections, storing crawlIds in collection
* Return collections for crawl endpoints and filter on coll name
* Remove crawl from all collections when deleted
* Revert get_collection_crawls to flat array of resources
* Fix tests
