The payment page has also been updated to refuse to show itself if
the registrar is not set to credit card billing terms.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117983313
1. Turn ConsoleUiServlet into an action
2. Remove AbstractUiServlet, which fixes its threading bug
3. Use type-safe soy template parameters when rendering console
A follow-up change will add a new template parameter that renders the
payment page link on the navigation bar.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117969638