Add the missing documentation for InfoTagMusic
Add missing documentation for InfoTagVideo
Add missing documentation for the base class of the Control hierarchy.
Fix the documentation formatting for the rest of the API.
Fix documentation indentation for Dialog::browse
Complete (re)cleanup of the API documentation of Control.h. Also remove an extraneous 'n' from the API documentation in Window.h.
A few more typo and format fixes in the API documentation.
Merge pull request #3119 from jimfcarroll/documentation-fixes

Documentation fixes