remove code around connection testing from frontend database create/update now that it is being handled in the api.

Move tools.reader dep to :dev since it's only needed for expectations

create an `:mb-run-mode` config property which defaults to "prod" and add couple predicate functions in our config ns for checking `is-prod?` and `is-test?`.  then update our event listener startup calls and wrap them with `(when (config/is-prod?) ...)` so that we only start them up when we intend to run the app for real.  lastly, update our environment for our expectations unit tests so that :mb-run-mode is "test" and thus our event processing listeners are not started for unit tests.

add Stencil to clojure libs so that we can have a very simple library for doing mustache style templating.

ordering. Fix lint error