templates: jQuery DataTables need explicit width="100%" for resizing to work correctly With Firefox, the resizing worked when making the browser window smaller, but not when when making the browser window larger. With Chrome and other browsers, neither worked. https://datatables.net/examples/basic_init/flexible_width.html says something about this. Follow their ugly advice and add explicit width to the templates.

# requirements.txt file for use as "pip install -r requirements.txt" as a
# readthedocs compatible alternative to "pip install -e ." which is a working
# alternative to "setup.py develop" which doesn't work with Mercurial 3.7
.