Apply JANITOR to generated Javadoc to resurrect frames-like experience to allow browsing

[archiecobbs]

Newer Javadoc has done away with HTML frames, which means it's much harder to browse available classes. This is especially damaging for a project like Guava which tends to provide lots of good stuff you don't even know about.

See this stackoverflow thread.

This change has disgusted many developers including me.

There is a workaround available though: See this reply.

Feature request: apply the JANITOR fixup (or some equivalent) to the generated Javadocs so people can browse the API docs again.