[BA-794] App Bundle

[Tanooj0902]

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[th0114nd]

Hi Tanooj, #88 is a version of the dapp bundle that I was able to get working. There were some issues in the bundle, and some in apex.
In the bundle:

1. import paths mismatching file locations
2. bytes32 arguments must be 32 bytes hex encoded for the _pwHash
3. Enums should be encoded as integers, rather than strings. So 2 works but "ADMIN" does not.

In apex:

1. Errors were not even making it into the logs, let alone the return values. This made it very hard to discover the above problems
2. Simultaneous contract uploads led to nonce collisions.
3. Apex was not resolving imports before checking that compilation worked.
4. Apex used fs.readdir to find relevant contracts, and if there were nested directories it tried to parse those as solidity files and failed.

To reiterate apex.1, all 6 of the other errors looked identical. blockapps/blockapps-rest#62 helps with some of the error reporting, and https://github.com/blockapps/apex/pull/21 solves the rest and most of the apex issues, as long as the file hierarchy is flat.