R1:bf505ef51c2a

Hard-code and unify "more applications" in Phabricator

Summary:
This is mostly intended to simplify D2323.

We currently allow users to edit and customize the links on the homepage, but as far as I know no one actually does this (no one complained when we redid the homepage earlier this year) and it creates a lot of mess in the database patches and quickstart dump. After D2331, this is the only data we load in the patch files. The patch files are also a mess with respect to this data and have various…