wip commit for testing preload files with electron-mocha. I think the test build is correct, but it wont run with regular mocha because the node version differs beween eletron and local node. I could rebuild for test vs dev but would be slow and maybe fragile constantly going back and forth. One alternative is to use electrons version of node; you can do this but need to then call mocha and do some electron setup; this is what elecgtron-mocha does. But as of this commit its not working -- it doesnt find the test files for one reason or another (outputs 0 tests ran).

Some other changes:

• Re-name scripts in /scripts to match package.json (test -> pretest, start -> dev)
• Refactor database setup, so it can be called in tests (in short, preload tests need a database)

Parking as WIP until I have a solid chunk of time to dig in further.

Closes #183