- remove useless `configuration` variables and `Configuration` instances
- remove "Review" code comment
- unintentionally included in commit 4b5dd19
- reduce repeated code in `TestHelper` for functional tests
- `CreateServer()` methods had duplicate code, an ambiguous match, and an odd order
- rename `GetTestConfiguration()` to `UseCultureReplacer()` in functional tests
* Removing Init method and using [Activate] to activate IUrlHelper.
* Moving IViewComponentHelper to default injected properties
* Adding functional tests to verify these properties are injected \
activated
Fixes#789