Starting to update the dialog controller to handle code versioning.

* Adding getCodeVersion to network.
* Adding error messages for if session_context fails during getCodeVersion.
* Adding a code check module.
* Updating start so that most modules are only registered whenever code is up to date.
* If the scripts are out of date, append a new script to the head.
* Cleaning up the dialog module's interface with the channel.
* Updating the compression script.
* Splitting off the actions into its own page module/controller for easier testing.

issue #226
issue #687