show events view when launched from camera-app

[Bill Filler]

when being launched from the camera-app, the gallery needs to reset it's view to show either:
a) the events view
or
b) the picture that was just taken in the camera

The scenario we need to fix is if the gallery is already open, viewing a picture or in an album. If the user then opens the camera and takes a picture and clicks the gallery icon, you see the already open picture.

We may need to implement a url-handler for gallery to support b), handling a url like gallery://id=<photo-name>

[Bill Filler (bfiller)]

Note, dialer-app, messaging-app, and address-book-app all have custom url handlers, so you can look at those for examples.