Fix CS errors
Use terser assertions.
Remove Asset.x Configure values.

Having Asset.timestamp on can fail tests accidentally.
Fix FormHelper::tagIsInvalid with saveMany forms.

When saving multiple records validation errors were not correctly shown.
Fudge the entity path so it matches the validation errors set in the
models.

Fixes #3828
$this->modelClass needs to be correct prior to the components init() call if the component itself accesses the model, lazyloading would try to load the wrong model otherwise
add test case
Merge pull request #1282 from dereuromark/master-model-class

$this->modelClass needs to be correct prior to the components init()
Merge branch 'master' into 2.4