Wroom: TCK demo package wrongly named

The import package using the TCK templates is named 'test and training'
But the core template set is displayed as "Test and Training templates' so there is a source of confusion here, users will most certainly try to import the package and associate them with the wrong template set.

1/ Islam :
rename the package import to "TCK (test compatibility kit) demo"

2/ Clement :
rename "Test and Training templates' " in "Core templates" (done)