Pendulum-1.0.6

• Updated mainnet snapshot and updated the public key as noted in helix-dao-data
• Disable remote API calls: attachToTangle, interruptAttachingToTangle, getNeighbors, addNeighbors
• Fixed getBalance: RoundViewModel.get() returns null on index=0, thus NPE was thrown when references were not passed and the first round hadn't been completed. In our implementation the snapshot is already constructed based on relative confirmations, thus it suffices for getBalances to respond with balance according to latestSnapshot.
• Updated previousEpochsSpentAddresses resource files