Own environment for sandbox components

[andrewzhurov]

We've got editor fields: hiccup, garden
And result fields: compiled hiccup, compiled garden, render

👿 Problem is: components inherit styles,
e.g. editors use class .collection, which also comes with materialize.css
e.g. render would inherit and we would not get pure Garden compile result to be our styles

😈 Desired behaviour: components get their own clean boxes