Log in to mysql:
> mysql -u root -p
(assuming you know the root mysql password. If not, you can use the webworkWrite user configured in site.conf).
Change to the webwork database:
> use webwork;
Look up the current course title:
> select * from [coursename]_setting;
You should see three values, one of which is courseTitle.
Change the course title to something new:
> update [coursename]_setting set value='New Course Title' where name='courseTitle';
Check to see if the change was made:
> select * from [coursename]_setting;
It looks like this will be fixed in an upcoming version of WeBWorK, so you should only need this for the near future.
Danny