Handle build issues, update css for mobile I added www.roundup-tracker.org as a property of mine in google search console. It reports bad mobile experience. According to the goatcounter tracker I put in, we get 400 hits from phones/small tablets; 400 from tablets/small laptops and 800 from computer screens. So 1/4 is mobile and 1/2 is not a large computer screen. On mobile (<960px) the left hand menu is stacked on top of the column in mobile sizes. Sub-menu links are spaced apart to make them easier to clkick on with a finger. Same with the table of contents in the documents. The main document content is now full display width (rather than scrunched to the right side of the display). This is just a quick hack, but it should make the docs more usable. As I worked, I found that _static/style.css changes were not being copied into the html build directory when sphinx was rerun. Nuke entire html subdir and rebuild from scratch each time. Also added comments to Makefile. Also robots.txt was being added as extra_html by sphinx, but it causes a missing from TOC error that exits the build (when using -W). Since exiting on warning is better, I changed Makefile to add robots.txt. Removed robots.txt references from conf.py.

Debugging Aids
--------------

Try turning on logging of DEBUG level messages. This may be done a number
of ways, depending on what it is you're testing:

1. If you're testing the database unit tests, then set the environment
   variable ``LOGGING_LEVEL=DEBUG``. This may be done like so:

    LOGGING_LEVEL=DEBUG python -m pytest test/

   This variable replaces the older HYPERDBDEBUG environment var.

2. If you're testing a particular tracker, then set the logging level in
   your tracker's ``config.ini``.

SENDMAILDEBUG
=============

Set to a filename and roundup will write each email message
that it sends to that file instead to the internet. 
This environment variable is independent of the python -O flag.