fix problem with proxy that arises from compile time code values on the old singleton and the bugfix for reading other contracts

fixes the issues with the deferred transactions and inline messages, implement changes to the proxy and a test case

  Now we use the folder of the header file where the type is defined as the root context.
  Types declared in header files located in child sub-folders will also be exported.
* Code generator now complies with the new coding standard.
* Fix contract annotations.
* Fix simpledb / Use the generated functions to deserialize/dump messages.
* Add optional flag to eoscpp generate-abi command to also generate serialization helper functions for the types defined in the ABI file.
* Fix abi_tests.

* Remove the "@abi type" annotation support, now typedefs are automatically included when needed
* Add ABI annotations to proxy contract types
* Fix ABI generation tests
* Fix travis call to tests
* Fix exchange typedef declaration

Ref #535

exposed many bugs in the contract code and producer
fixed what I found

ref EOSIO/eos#175