Added Flyoutmenu in app. added some png to respective folder.
Merge branch 'development' of https://github.com/TeamSalesforce/AllyForceApp into MCSAL-5

Conflicts:
	AllianceSalesforceApp/AllianceSalesforceApp/AllianceSalesforceApp.csproj
	AllianceSalesforceApp/AllianceSalesforceApp/Views/Login/LoginPage.xaml.cs
	AllianceSalesforceApp/AllianceSalesforceApp/Views/Login/LoginPageViewModel.cs

Still there is one issue when i directly choose accounts then it is not loading the data.