Non-categorical view of all curated apps sorted by most recently added

Sometimes I just want to check out all the awesome projects people develop for elementaryOS, not looking for anything in particular. A way to have all curated apps displayed in a list would be good.

Start by locating the curated-app listing and the entry points that control category views and ordering; the issue names no files or tests. Done means all curated apps can be displayed together in a list sorted by most recently added.

Written by the indexing model from the issue text.