Filter out subscriptions that haven't been backfilled yet
Merge pull request #1955 from christav/filter-backfill

Filter out subscriptions that haven't been backfilled yet
Throwing expected message if current subscription not set
Fixed failing unit test, made it consistent with rest of error messages. Removed now redundant null check
Merge pull request #1956 from christav/throw-on-no-subscription

Throwing expected message if current subscription not set
Management libraries update
Merge pull request #1960 from christav/fri-lunch-push

Management libraries update
Merge remote-tracking branch 'upstream/dev' into dev-net40

Conflicts:
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Common.NetFramework.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Common.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.MediaServices.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.ServiceBus.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.Sql.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.Store.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.VirtualNetworks.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.WebSites.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Management.dll
	WindowsAzurePowershell/src/lib/Microsoft.WindowsAzure.Subscriptions.dll
Updating to latest -pr library source