apply-changes

[artman325]

need to complete changes amde by Greg

• https://github.com/Intercoin/EscrowContract/tree/greg_changes
  branch have changes but code left in not compiler state
• https://github.com/Intercoin/EscrowContract/tree/b0712 branch was forked from branch "greg_changes" and fixed compiler errors. but still does not how to use with some cases:

1. how to use with offchain option
2. what happens when both side set offchain
3. how to mark offchain
   and others