Potential for tidy up

[IdlePhysicist]

Regarding model.Statistic

$ grep -R Statis .
./internal/gui/gui.go:	//statsLocations []*model.Statistic
./internal/db/db.go:func (db *Database) GetTopPeople() ([]*model.Statistic, error) {
./internal/db/db.go:	cavers := make([]*model.Statistic, 0)
./internal/db/db.go:		var c model.Statistic
./internal/db/db.go:func (db *Database) GetTopLocations() ([]*model.Statistic, error) {
./internal/db/db.go:	stats := make([]*model.Statistic, 0)
./internal/db/db.go:		var s model.Statistic
./internal/model/gui.go:type Statistic struct {

Whether this is removed depends on how #24 progresses in development.
I don’t believe that this needs to be on the v2 milestone as these structs and functions may survive in some manner (based on #24 once again).