More decoupling between database and table view delegate
CatalogPerspective doesn't have to know about filter for now
Fix SQL formatting
CatalogPerspective++
Pad circle collection with empty circles
CircleCollection can choose not to respect cut index
Class cluster-ize CatalogPerspective
-[Cicle description]
Remove an unused method
CatalogPerspectiveFiltered (some sort of)
Rename a method
Show the summary of a CircleCollection in a group row
Get along with empty circle