Part one adding Dropbox support
Updated Dropbox to first working proto
Please note it's currently running on my Dropbox using Sandbox. Should be changed to use Mark's account instead and sent to approval at Dropbox.
Up to speed commit
Fixed wrong filename on DB upload
Merge branch 'master' into dropbox

Conflicts:
	src/GoShareIt.Application/SettingsWindow.xaml
	src/GoShareIt.Application/SettingsWindow.xaml.cs
Merged master into Dropbox support by jh