We drop support for usage of `icon-vector` as base class when
including icons from font awesome icons package.
Now on, only icons as specified in font awesome v4.7.0 can be used
in the code base.
This directory contains scripts that are used in building, managing,
testing, and other forms of work in a Zulip development environment.
Note that tools that are also useful in production belong in
scripts/ or should be Django management commands.