Set content to default if unable to resolve view with view locator
Throw meaningful exception instead of hiding bug
Move Suspension interfaces to the portable library
Add a dummy implementation of Suspension classes
Merge pull request #364 from reactiveui/move-mobile-interfaces

Move mobile interfaces to Portable RxUI
Merge pull request #359 from terenced/handle-unresolved-view

Set content to default if unable to resolve view with view locator