issue/2363 drop src/course pathway in grunt

[oliverfoster]

fixes #2363 build/course or supplied outputdir folder only, no src/course

• Changed to 2 spaces for json output
• Added json-prettify task for dev to compliment json-minify for build
• Reorganised main grunt tasks around server-build
• Allowed build:diff and dev:diff as options during refactor
• Deleted src/course folder, removed pathways for processing
• Added build/course folder, .gitignore and copy task directives
• Ensure grunt clean works correctly

build/course - course content
src - plugins only
src/course - deleted

IMPORTANT:
This will break AAT import and export as they expect src/course.
It will not break the framework but is a sufficiently large change to warrant a major version number.

QUESTION:
Process - Do we need a separate branch for v6 (as with v5) or merge straight into master? Yes.

[cahirodoherty-learningpool]

👀

[brian-learningpool]

Is there any knock-on effect on the Adapt CLI with this change?

[oliverfoster]

Is there any knock-on effect on the Adapt CLI with this change?

There shouldn't be. I will check.

[chucklorenz]

Do we need a separate branch for v6 (as with v5) or merge straight into master?

Thinking abt those who come new to the project, or who just simply don't take the time to deliberately choose btwn the master and a release: can you avoid some questions/problems/explanations by using a v6 branch? (no strong opinion myself)

[cahirodoherty-learningpool]

👀

[lc-alexanderbenesch]

Looks good, works even better 👌