Adapt v2.0 - Make Publish/Preview with new framework Gruntfile

[brian-learningpool]

The Gruntfile in the framework has changed and the code in the output plugin will require changing to support this.

NOTE: It should be possible to still work with version 1.x also, if the user has not upgraded.

[taylortom]

A few questions:

What's needed in the server-build task? Currently consists of the following:
https://github.com/adaptlearning/adapt_framework/blob/develop/Gruntfile.js#L592-L593

Should this use outputmanager.js.Defaults:
https://github.com/adaptlearning/adapt_authoring/blob/master/plugins/output/adapt/index.js#L151-L152

[brian-learningpool]

The server-build task is required to compile/build the JS, CSS and everything else required for a course to render, except the actual course JSON.

The course JSON gets dropped into the correct folder during the publish/preview.

[brian-learningpool]

Resolved in #801.