add screen for detail view - can set title and description

no validation yet :)
Merge branch 'detailview'
fix regression which broke settings dialog

have to check which segue we're going for before setting the selected record!
Adjust transparency on description, label size

TextView was solid bright white and didn't quite match the area around it.
Changed it to transparent background.
Label size was slightly too small, made it larger to not cut off.
Settings view will now only validate credentials if they have been changed, and uploads cannot begin without first logging in