creation of a valid Dogecoin transaction
Merge branch 'send-doge' into fixing-source

Conflicts:
	wallet/src/main/java/com/coinomi/wallet/ui/WalletActivity.java
	wallet/src/main/java/com/coinomi/wallet/ui/WalletSendCoins.java
merging working code
LookaheadThreshold in keychain was not updated when set a smaller value for LookaheadSize
added wallet protocol buffers