MaaasIOSClient warnings cleanup

[bcr]

There are still a few warnings when building the MaaasIOSClient:

MTOUCHTASK:  warning MT0049: PushKit.framework is supported only if deployment target is 8.0 or later. PushKit features might not work correctly.

I think this is a Xamarin bug, being discussed in their forums.

/Users/blake/Source/Synchro/MaaasClient/MaaasClientWin/MaaasClientWin.csproj:  warning : Could not find project file /Library/Frameworks/Mono.framework/External/xbuild/Microsoft/WindowsXaml/v12.0/Microsoft.Windows.UI.Xaml.CSharp.targets, to import. Ignoring.
/Users/blake/Source/Synchro/MaaasClient/MaaasClientWin.Shared/MaaasClientWin.Shared.shproj:  warning : Could not find project file /Library/Frameworks/Mono.framework/External/xbuild/Microsoft/VisualStudio/v/CodeSharing/Microsoft.CodeSharing.Common.Default.props, to import. Ignoring.
/Users/blake/Source/Synchro/MaaasClient/MaaasClientWin.Shared/MaaasClientWin.Shared.shproj:  warning : Could not find project file /Library/Frameworks/Mono.framework/External/xbuild/Microsoft/VisualStudio/v/CodeSharing/Microsoft.CodeSharing.Common.props, to import. Ignoring.
/Users/blake/Source/Synchro/MaaasClient/MaaasClientWin.Shared/MaaasClientWin.Shared.shproj:  warning : Could not find project file /Library/Frameworks/Mono.framework/External/xbuild/Microsoft/VisualStudio/v/CodeSharing/Microsoft.CodeSharing.CSharp.targets, to import. Ignoring.
/Users/blake/Source/Synchro/MaaasClient/MaaasClientWin.WindowsPhone/MaaasClientWin.WindowsPhone.csproj:  warning : Could not find project file /Library/Frameworks/Mono.framework/External/xbuild/Microsoft/WindowsXaml/v12.0/Microsoft.Windows.UI.Xaml.CSharp.targets, to import. Ignoring.
/Users/blake/Source/Synchro/MaaasClient/MaaasClient.sln:  warning : Don't know how to handle GlobalSection SharedMSBuildProjectFiles, Ignoring.

Not sure what any of these guys are yet.