Merge pull request #2 from newyankeecodeshop/master

Display a special message when the total number of matches is unknown.
CheckBox gets className=CheckBox
upgrade wingspan-forms with CheckBox class set
facet styles - wip
fix grid alignment
scratch script to generate facet data
add email to ContactModel
big sample data for facet grid
Don't show facets for hidden fields
Clamp height to 600px
apply filters - wip
move app out of entrypoint
facet filtering minor cleanup
add Q to facets example
facet datastore
Hide some facets and columns for now
add missing key
grid columns - title and widths
Refactoring - fix facets computations, happens in "backend", fixtures
remove unused code