Initial hack on the settings-flyout

Added the accent color selection
Change the accent color through the viewmodel
Moved the about section to the settings flyout
Further migration of the settings
Move party mode settings
Merge branch 'master' into settings-flyout
Beautify XAML
Merge branch 'master' into settings-flyout

Conflicts:
	Espera/Espera.View/Views/ShellView.xaml
Merge branch 'master' into settings-flyout

Conflicts:
	Espera/Espera.View/ViewModels/AdministratorViewModel.cs
	Espera/Espera.View/ViewModels/DesignTimeShellViewModel.cs
	Espera/Espera.View/ViewModels/ShellViewModel.cs
	Espera/Espera.View/Views/ShellView.xaml
Merge branch 'master' into settings-flyout

Also continued the work on the settings flyout

Conflicts:
	Espera/Espera.View/ViewModels/AdministratorViewModel.cs
	Espera/Espera.View/Views/ShellView.xaml
Fixed padding
Changed accent color arrangement
Prevent initial focus on the textbox
Added party mode and login
Merge branch 'master' of github.com:flagbug/Espera