List group items in types and entities columns should be rendered from Model data using components/templates

[kdbanman]

Here is an incrementally-rendered list viewer for many list elements.

@KarimBaaba, do you think this is happily compatible with bootstrap?

[xkb]

@kdbanman it requires setting a list height explicitly which is a bit scary. I'm not sure if it would work with the CSS you've added.

Here is a list of components/views that we ought to evaluate:

• ember-cloaking
• ember-infinite-scroll
• and of course list-view

Which all should be in a separate issue.