Fix conflicts in Chromatic.pm file
Fix Chromatic.pm again
Merge branch 'release/2.8' of https://github.com/openwebwork/pg into release/2.8
Add most recent version of compoundProblems macros
Merge branch 'release/2.8' of https://github.com/openwebwork/pg into release/2.8
Correct behavior of HINTS and SOLUTIONs

Solutions are shown immediately to students in HTML mode after the due dates
Hints are shown to students in hardcopy after the answer date if they request it
Solutions and hints are not shown to instructors in hardcopy mode unless they request it.
Finish tweaks to solutions and hints subroutines
Merge pull request #76 from mgage/release/2.8_hint_solution_tweaks

Release/2.8 hint solution tweaks

Nevermind.  The error was caused by CAPA problem, which never worked anyway. 


I tested the behavior of Show Solutions and Show Hints for both students and instructors with both the answer date and the due date.  They all seemed to work fine.  My only concern is that students can only show hints via hardcopy if its past the answer date, even though they can see them via webwork earlier.  This seems like a reasonable solution though, because there is no way to check how many "attempts" a student has had on a hardcopy. 

I tested compundProblems4 and it seems to work.