Release 2.0.06 and new features for 2.0.0.7

[IamLupo]

• New main introduction with better references and separeted DigitalNote-Build project. (patched together with Hanz)
• Add new buttons to repair your wallet.
• Add BIP39 support with brand new BIP39 library made by Digitalnote team!
• Patch code stictness.