Feature/require tasks

I did a quick refactor of how the gulp tasks are named and stopped using gulp-chug. Run gulp tasks to see a list of the tasks to see how they look but generally it's things like 'vn.build' and 'sdk.archive'.

Using require instead of gulp-chug will help with using common js modules for voice navigator and using browserify to build. Let me know if this breaks anything (especially the search widget). At some point we can migrate any scripts using non conforming task names (i.e. buildVoiceNavigator), but I left them in for now.

We can easily change the task nam

Take a look when you have a chance.

Thanks,
J.J.

@swarajban @jagill