make the schema migration more robust by adding the not-null constraint w/ an update statement to an interim value.

makes more sense for full height to be height 100% and adds viewport-height for instances where 100vh is needed

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.

add the DashboardCardSeries model which allows attaching additional cards to a DashboardCard.  this includes the new database migration, new model code, new persistence functions on DashboardCard, and a bunch of unit tests.

add new `is_full_sync` field to Database model so that we can track if the given database should run a full-sync? when its time to update its metadata.

Text in page flags

Make page flags with text a little more padded, remove blue glow from portal

Fix page flag transition

Fix lint warning

Embiggen page flags

Update new query placeholder text/button

Improve portal 'exit' animation

Use correct port targets for view steps

Fix tutorial modal widths

Add text to date grouping page flag

Update onboarding modals

Page flag tweaks

Conflicts:
	frontend/src/admin/databases/components/DatabaseEdit.jsx
	frontend/src/css/core/text.css
	frontend/src/query_builder/AggregationWidget.jsx
	frontend/src/query_builder/DataSelector.jsx
	frontend/src/query_builder/GuiQueryEditor.jsx
	frontend/src/query_builder/filters/FilterPopover.jsx

Metrics!  all the same basic capabilities as Segments, but now applied with the option to define the aggregation.