Added the manual provider to the supported container types list and made it more resilient if it is an unknown provider
Added tests to make sure we have the appropriate providerFeatures values
Merge pull request #602 from hatched/manual-provider-1376353

Fixes container header rendering bug #1376353

When running on the manual provider we didn't have a proper `providerFeatures` property so it didn't render the container header. This adds the manual provider to the list and creates a more resilient fallback for future unsupported providers.