Make HTML Preview more visible

[jmewes]

I am searching for a tool which enables teaching HTML / CSS / Bootstrap / Git to pupils.

Gitpod seem like a very good fit, if only it could preview HTML files as it does for Markdown files.

[svenefftinge]

You can right click in the file navigator and then choose Open in Mini Browser

[svenefftinge]

We should add the new preview toolbar to html files.

[svenefftinge]

@akosyakov could you take care of this as part of eclipse-theia/theia#3451 or separately if you prefer?

[akosyakov]

@svenefftinge can be closed? i believe it was released already