Update to reflect Michael's new DB feature
Update to reflect Michael's new DB feature

We are now no longer limited to an in memory graph DB, and we in fact use a custom graph DB with on-disk storage by default.
joernio/joern,joernio/joern,joernio/joern,joernio/joern,joernio/joern,joernio/joern,joernio/joern,joernio/joern