Use the PublicationRepository to fix the TransactionTooLargeException

[mickael-menu]

Fixes readium/kotlin-toolkit#247

I decided to throw an Exception (and close the Activity in release mode) if an app still uses the old publication intent extra. Since apps can crash when loading a big publication, better make sure they are actually upgrading to this new method as soon as possible.

Usage:

// In the source Activity, do:
intent.putPublication(publication)

// And in the target Activity, in onCreate():
val publication = intent.getPublication(this)

// Don't forget to call this in Activity.onDestroy(), to release the Publication:
intent.destroyPublication()