Scoped styles in a component marketplace

[arxpoetica]

See: #1070 (comment)

In essence can a marketplace component's styles be a) replaced globally or b) overridden by another stylesheet.

I think there's a very fundamental question here on whether we decide that a component even ought to be styled globally. In other words, the prevailing philosophy, as I understand it, is that scoping is explicit to the component for a reason: so it remains untouched by the global environment.

Still there's something to be said for classnames and default cascading rules.

[This one's a real debate...I feel conflicted about it...]

[arxpoetica]

One thought is this could be decided by a flag in the component itself:

export default {
    [...component stuff...]
    classname: true, // alternately, classname: '.name-of-class' ... something like that...
}

[arxpoetica]

There appears to be another issue for this, so I'll mark it up as such and close this one. See #901