Style - Adding min-widths on the body in regular and experimental views.

The UI breaksdown at small browser sizes due to element squashing.
The min-widths added here match the size of the content elements
found throughout the UI to the extent of preventing the user from
getting themselves into a poor user experience state.
Merge pull request #2400 from ehelms/style-updates

Style - Adding min-widths on the body in regular and experimental views.