Added toggleable guidance/comments section

[benjaminfaure]

Changes proposed in this PR:

• Add toggleable comments/guidance section
  • add config to enable/disable this feature
  • add config to open/close by default
  • question/guidance divs use flexbox instead of bootstrap grid system

[benjaminfaure]

I wasn't sure where to put the CSS & JS code, if it's in the wrong place please tell me :)

[briri]

Thanks for getting this to us so quickly @benjaminfaure!

I have 2 very minor changes. It looks great overall and the JS and SCSS files are in the correct place! :)

I will pull down the changes and confirm that it works as expected in the UI later today

[benjaminfaure]

Thanks for your feedback @briri , I push the changes you requested :)

[raycarrick-ed]

@benjaminfaure @briri Pulled down the code on top of an up to date roadmap and it worked perfectly out of the box. Very nice! So I'm for it to get merged in.