Working towards properly isolated tests
make -short skip DB interactive tests

(which will be going away hopefully soon)
interact doesn't need to be a method on Database
Fix vet warning
Coverage of unmarshal_url
Tests for timeoutClient
Test i64 opt parsing with defaults
Test db url creation
Tests for Running()
Simplify Running
Tests for DBExists
interact tests
Validate custom headers
Don't do custom auth stuff in interact

Header's ignored and this is managed elsewhere (and tested).  Might even
work.
Test delete DB and internal create
Cleaned up clean_JSON some
Test Bulk
Some style cleanups (removing _ in vars, etc...)
lint fixes related to error messages
Testing of private insert