delete ViewTestConfigInstaller and have ViewTestData create views, not 'import' them

views tests that need to create views from config should just create them, not 'import' them.

over in #1808248: Add a separate module install/uninstall step to the config import process, i'm messing with the ConfigImporter, because, you know, it's the importer. it makes zero sense that changes i'm making there should blow up code over here. i can see that this 'just extend ConfigImporter' pattern prolly didn't start with views, but it must die.