Fixed a display bug with contextLimitedFactor.pl
Add macro files for new contexts (AlternateDecimals, AlternateIntervals, InequalitySetBuilder, Partition, Permutation, Root).
Fix alternate intervals so it works with answer checking (not sure wy this wasn't included initially.
Merge pull request #144 from mgage/master_IO_fix

Fix 'fileFromPath not defined or not exported'  error
Added href to knowl links
Changed pts to points
First attempt at adding aria labels
Added BLABEL and ELABEL
Increased aria support
updates to pccTables.pl
Added aria-labels to matrix answers
Fixing read_whole_problem_file bug

-  We fixed a couple of cyclic use calls in IO.pm
-  We moved not_null and pretty_print from PGcore into PGUtil and made
   a bunch of other changes to accomidate that
Fixed PGcore/not_null ref in AnswerHash
Changed fileFromPath back to standard importer stuff
Changed share to share_from with safe compartments.
revert unintended change
Merge branch 'patch-input-colors' of http://github.com/dpvc/pg into access

Conflicts:
	lib/Value/AnswerChecker.pm
Added aria label support for multianswers
Polish after whitebox testing.  Added missing BBOLD and EBOLD stuff.
Upgraded aria labelling so it works with matricies inside multianswer
Fixed ans_array to work properly with multianswer.  Did some double checking just to make sure.
Merge remote-tracking branch 'upstream/develop' into access