New preferences window
More consistent preferences styling and layout
Fix app.net code layout when it has content, miscellaneous layout tinkering
First pass on Configuration support.

This will scrape the Config Manager interface to get the full-text
content (and user-defined name) of each configuration saved on
RadarWeb. These are then saved, and can be applied in a manner similar
to picking recently launched apps. (Of course, since RadarWeb allows
it, the user can also freely input configuration data like "iPad 3,1
64GB + iOS 6.1".)
Merge branch 'master' of https://github.com/rustle/QuickRadar
Merge branch 'AddConfigurationField' of https://github.com/khakionion/QuickRadar
Improvements to the preferences window

Signed-off-by: Amy Worrall <amy.worrall@agant.com>