fix image urls

cool.  merging.

Merge branch 'reposition_via_dashcard_id' of github.com:metabase/metabase-init into create_dashboard

move our conditional up a bit to avoid running it when we are showing…

create EB version before deploying prototype.

Revamp Popover, extract 'Triggerable' functionality into higher-order component in preparation for Modal/ModalWithTrigger

Add a 'clone' parameter to /card route, use it in dashboard card links. Also fixes duplicate history entries when navigating to query builder

Fix object detail view so that columns with `:preview_display false` still show up

Improved webpack configuration, always build our own React but provide the correct flags to strip debugging info