Rename rest of function names, classes and comments containing bugdoown
to markdown in test_markdown.py. Also change the refactored classes and
functions occurences in other files.
This commit is part of series of commits aimed at renaming bugdown to
markdown.
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.