Datastore Context adds crawl, run, fetch and query; Miner startup fix; Autorun multiple functions

[blakebyrnes]

This PR adds a few items:

1. Makes the default functions on Datastore marked as internal (internalQuery, internalRun, etc). Then it adds crawl/run/fetch/query to the run context. This allows us to pass through the authentication, payment, etc from the caller.
2. HeroReplay adds a static fromCrawler when passed into a context. This allows you to request a crawler instance by using HeroReplay.fromCrawler(crawlerInstance)
3. Autorun now allows a function name/export to be specified and will run a function if it matches, or is the only option in the entry point
4. Fixes an issue starting the miner that was waiting for the wrong variable to be initialized. Also fixes a timing issue starting.