Expose app versions in UI

* Add model and collection for AppVersion
* Expose all versions in the “Configuration” tab
* Roll back to previous versions via a button on the version row
Rename JSX files to .jsx for new compilation setup
Add dependency lost in rebase
Use `map` to render app versions
Adding folding to the app version list
Adding styles to list
First draft, WIP, app versions
Handling errors, open/close and fetch/loading.
Changing AppVersionCollection to a SortableCollection
Bug fix: passing success func in save as the right
as the right argument
Adding fetch state to display list/loading/error
Adding paged content to app versions list
Styling pagination
Changing colors
Removing radio buttons
Review: code cleanup and minor changes
Merge branch 'master' into app-versions

Conflicts:
	src/main/resources/assets/js/components/AppModalComponent.jsx
Bug fix: refresh app version list on scale app
Handling disk node
Re-styling configuration