add a new optional driver method for `notify-database-updated` which allows drivers to be informed when their databases are updated. then implement this method on the generic-sql driver and use it to actively shutdown any open connection pool on the updated database so that we can recreate it as needed.

update the connection-spec acquisition code for our generic SQL driver to unify it based on acquiring a connection for a given DATABASE and to replace the memoize/ttl with our own atom for caching db connection pools to each database.  This avoids the unnecessary recreation of connection pools every so many hours.

add a client side search on the table name in the data selector.

Add new :min & :max aggregation types 

Better type checking for our clojure protocols & types 

we have the column metadata to tell us if the column is a date, so lets use it

construct the new rows query from the data reference in a more appropriate fashion.

fix typo that was preventing description from saving on cards

fix up the LimitWidget and use it as a declarative UI component.

Bump dependencies 

Update moment.js

Fix support for Java 1.7   #2098

Metabot improvements 

Format dates using timezone returned in the data

Cleanup deprecated React APIs / enforce more lint rules

Conflicts:
	frontend/src/lib/formatting.js

refactor app mount point to remove flex context by default

Fix metric bugs

fix up the rendering of retired metrics in the field list and the description on retired metric tooltips.

don't show the `Common Metrics` aggregation section if there are no active metrics the user can reasonably pick from.