* fix(datatables): allow selecting range using shift (#344)
* feat(datatables): more intuitive batch select behaviour
* feat(datatables): add overridable function called on selection change
* refactor(datatables): remove custom selectAll on Generic-extending Controllers
* fix(datatables): stored state data retrieval on Generic-extanding datatables controllers
* refactor(datatables): remove code duplication between GenericController and extending controllers