Fix dependency installation failures.

* Update the `simplepush_test` submodule.
* Qualify the `goprotobuf/proto` package name.
* Prepend the repo root directory to `$GOPATH` when installing and
  building Simple Push.
Nothing in this file
This isn't actually used anywhere, util's is.
Start of config refactor.
Tweaks to mz_config.
Add new logger and default stdout logging.
Add basics of appconfig.
Remove mz_log as its deprecated by stdoutlogger.
More portions of this refactor. Lots of things in motion.
More changes to the new sample config.
Fix TOML strings and lists.
Moving files....
Another tweak to what the config file should look like.
Remove bits as I copy them into the new app setup.
More config changes.
Metrics fully cleaned up for new config.
Remove references to dead packages.
More util reference cleanup.
Mostly cleaned up and completed storage.
Mostly complete router updated for config.
More util references to remove.
Another hefty batch of refactoring, this time it actually compiles.
Switch config sample to use the new TOML config.
Optimize null path for logging.