Directly launch applications with a remote entry point

Signed-off-by: Simon Busch <morphis@gravedo.de>
Bring back application loading animation

We need some visual feedback for the user while the web content is still loading. When we
keep the window hidden until the web view is ready the user will have the experience that
apps are launching quite slow so it's better to indicate whats going on.

Signed-off-by: Simon Busch <morphis@gravedo.de>