Documentation enhancements

[Roba1993]

A list of all documentation enhancements/problems I noticed.

• The new generated rune documentation lacks a link to the module overview.
  • So when I'm at this location there is no link to this page.
• Too long source code is overflowing on the right side
  • 
• When defining a module twice it's shown two times
  • e.g. When using io-nocapture and implement own dbg/print/println functions
  • Both links show the same content, but in this case the link with no comment should be hidden IMHO
  • 
• The ordering of the modules is random
  • 
• The display of protocol functions is not intuitive
  • Get / Set should have the field in the header to make it easier to read
    • 
• Field functions can be deprecated, when manually defined

[udoprog]

Closed in #677, cheers!