Change requirements.

South 0.7.6 to 0.8.4

Change-Id: Ie2f901bfca8907ef6a429cd6398cc950acf47b34
Fixes: #1999
Sort table columns.

Sort all tables in web pages in some default order.

Change-Id: I3519d133fff601e8553e6c2a2784c59733cb80ff
Fixes: #1987