landing page improvements

[donjan]

• Whole tile or at least title should be clickable.
• backlinks from module documentation to landing page

[mskoenz]

will do it when I redesign the index generator...

[donjan]

Streamlining suggestions:

• whole tile clickable, and indicator on hover (bgcolor highlight or border change)
• change (default) to just bold version number text (which is preselected anyway) the (dev) marker is not really necessary IMO
• drop the Latest Version line altogether since it looks noisy instead we could add the recommended version after the title (maybe in smaller font) or right below the title (in smaller-than-body-text font and maybe grey colour)
• change avers text All Versions to Version: