Enable datepickers on mongo

couple fixes for saving semantics

Faster launch time by compiling w/ elide-meta 

Bump a few more dependencies 

Upgrade to Clojure 1.8 

fix up a few cases where visualization settings on a card were changing or the query was being updated by the visualization component and we weren't accurately tracking these changes as a modification to the card in our new saving semantics logic.

Don't party too hard 

switch CSV download over to using an http POST request so we can support long queries

hide the "grouped by" useful questions from the data reference if the field is not a valid dimension.

More BigQuery branch improvements 

Various improvements from BigQuery branch 

Saving semantics v3

hide the "grouped by" useful questions from the data reference if the field is not a valid dimension.

instead of passing a link to the Mac app, just pass the query serialized as JSON and let the Mac app send the post request to the API to get the CSV.

Spelling fix for elastic beanstalk docs

Metabase tax cut 

render scalar values when they are 0.

adding a new attribute to users so that we can track if they've seen the QB informational modal and wiring up the modal on the frontend.