Added test to check inheritance of handlers.
Added test to check inheritance of handlers.

rehabstudio/rehabstudio-gae-scaffold,google/gae-secure-scaffold-python,google/crisis-info-hub,jerryclin/gae-template,google/crisis-info-hub,JustinAtPsycle/gae-secure-scaffold-python,google/gae-secure-scaffold-python,google/gae-secure-scaffold-python3,JustinAtPsycle/gae-secure-scaffold-python,jerryclin/gae-template,chrisle/gae-secure-scaffold-python,JustinAtPsycle/gae-secure-scaffold-python,rehabstudio/rehabstudio-gae-scaffold,jerryclin/gae-template,jerryclin/gae-template,chrisle/gae-secure-scaffold-python,google/gae-secure-scaffold-python,chrisle/gae-secure-scaffold-python,google/crisis-info-hub,chrisle/gae-secure-scaffold-python,google/crisis-info-hub,jerryclin/gae-template,JustinAtPsycle/gae-secure-scaffold-python,rehabstudio/rehabstudio-gae-scaffold