[WWdevel] show saved answers and practice users

[John J. <jj...@as...>]

Hi,

A question came up on the discussion board.  I am not entirely sure of 
what people are expecting, but one thing seems to be a feature from ww 
1.x where by default, practice users did not have the last submitted 
answer shown.

Should we put this in ww 2?  I think it would be relatively easy to do:

    * add a permission setting in global.conf of can_show_old_answers
      and set the default level to $student.
    * check for this permission when setting the value in Problem.pm. 
      It is not quite parallel to the other items with the can/want/will
      system since it just refers to using the default value, but it can
      be handled in pre_header_initialize.

While looking at it just now, I saw another bug in showOldAnswers (i.e., 
in addition to the one I just fixed in cvs).  I'll wait to see what 
people want on this question before addressing it.

I don't have a strong preference, so what do you think about having a 
way to make practice users not see old answers by default?

John