Fixed misleading UI text

Multiple aggregations backend support [WIP]

Emphasis for warning against using H2 in production 

Change H2 filename suffix in documentation

Fix various issues with quick filter popover

Fix issue with not being able to go back to schema picker

Leaflet pin maps

Fix setting settings

Fix issue with not being able to go back to schema picker if there is 1 db with multiple schemas. Resolves #3309

Re-enable frontend tests

Don't round small numbers to 0 in compact scalar format

Fix region chart legend

Add a touch of letter-spacing to uppercase text

Right should be bounded by longitude value

Update bin/heroku/deploy to use node buildpack branch with yarn support

Don't store column cardinality on possibly immutable column object