CSS: Solved too-many-scrollbars on add application modal dialog.
CSS: Scrollbars to 'auto' by default.
CSS: Solved occassional jiggldy-pigglty layout of lozenges in add application dialog when using Chrome.
CSS: Repositioned Application Content navigation tabs.
CSS: Solved add applicaiton location select dropdown too small on FireFox.
CSS: Increased minimum size of the JSON textarea in the application explorer.
CSS: Added margin below swagger ui content.
CSS: Nav colour not actually '!important' here. Will prevent problems later.
CSS: Add Apllication Search box spacing improvement.
CSS: Swithced to min-height to give sufficient field size in FF (Add Application Configuration).
CSS: Added margin below swagger.
Merge pull request #795 from jdtoy/amp-css-improvements

CSS Polish