Require Android 4.0.3 (Ice Cream Sandwich). Get rid of ActionBarSherlock and pull android-support dependencies from repository provided by the SDK.
WIP
- Crashes at several places.
- AppWidget wrong divider and size.
IDEAS
- Switch backups to not write to external storage any more. It will need android.support.v4.content.FileProvider to create an URI that can be shared with other processes (e.g. Google Drive).
Target Android 4.1 (Jelly Bean).
Modernize app icon and fix shadow.
Use batik-maven-plugin to generate app icons from SVG source.
[WIP] Update to bitcoinj 0.12-SNAPSHOT.
API change: keys -> importedKeys rename.
API change: KeyChainEventListener.onKeysAdded()
API change: Removed Transaction constructor.
API change: PaymentRequestException -> PaymentProtocolException
API change: PkiVerificationData moved from PaymentSession to PaymentProtocol.
API change: Coin class.

Conflicts:
	wallet/src/de/schildbach/wallet/data/PaymentIntent.java
	wallet/src/de/schildbach/wallet/ui/RequestCoinsFragment.java
	wallet/src/de/schildbach/wallet/ui/send/SendCoinsFragment.java
API change: VerificationData names.
cleanup: Deprecated methods.
cleanup: Use bitcoinj payment protocol classes rather than own.
cleanup: Use new CoinFormat class.
cleanup: Use new Fiat class for fiat values.
feature: Show dedicated dialog if empty wallet failed.
feature: Show the network fee for transactions created by us.
feature: Add hint about fee to send coins dialog.
feature: Show errors about the amount instantly.
TODO maybe remove/collapse some dialogs after Go button, because it can't happen any more