fix(gems): fixed dummy_app form style - added simple_form gem
fix(test): fix falling test; add basepack_basic_update_spec.rb
feat(test): extend select2 spec helper
feat(test): improved basic_new_spec test and select2 helper
fix(sanitize_params): fix sanitize_params to properly handle :id and :_destroy in nested_forms
refactor(dummy_app): remove unneeded tables
test(list): add test for sortable and correct similiar test

Add title column to employee to test for sortable title_with_name
Refactor tests which use have_selector without text: option because
it DOES NOTHING without this option, this test passes e.g. this test
always passes
expect(page).to have_selector("tbody tr:first", "Non-existing text")
[ADD] bulk delete