Merge pull request #34 from mgage/master

syncing master branchs of openwebwork/webwork2-dev and mgage/webwork2-dev
Merge pull request #36 from mgage/master

Add a VERSION file for PG.
Fixes bug 2419: In the case of a single answer blank a student could have the answer only partially correct,
for example where the answer is a list. Although this would be graded correctly with a status strictly between 0
and 1, the student would still see a green bar below the problem stating "Your answer is correct." This fix gives a more appropriate response: "Part of your answer is NOT correct."
Merge pull request #42 from aubreyja/master

Fixes bug 2419 giving GatewayQuiz.pm a more appropriate response to some partially correct answers.
Merge pull request #44 from mgage/master

automatically load in achievement directory, allow admin course upgrade
Merge branch 'master' of https://github.com/paultpearson/webwork2-dev

Conflicts:
	lib/WeBWorK/ContentGenerator/Instructor/Stats.pm
fix stats.pm file
Merge branch 'ww2.5.1.1' of https://github.com/openwebwork/webwork2-dev
Merge branch 'ww2.5.1.1'

Conflicts:
	lib/WeBWorK/ContentGenerator/Instructor/Stats.pm
catch master up to ww2.5.1.1
Merge branch 'master' of https://github.com/openwebwork/webwork2-dev
Merge branch 'ww2.5.1.1'
Use Storable::nfreeze instead of freeze.

This fixes abug discussed in http://webwork.maa.org/moodle/mod/forum/discuss.php?d=2562
Merge pull request #56 from apizer/master

Use Storable::nfreeze instead of freeze
Merge pull request #59 from openwebwork/master

update freeze/thaw   to nfreeze/nthaw
Move course tmp files from the course directory to WeBWorK's tmp directory.

Changed the default location of all WeBWorK tmp files to
.../webwork2/htdocs/tmp.  We only had to change where course tmp files
are put.  Thhey now go to .../webwork2/htdocs/tmp/course_name/
So .../webwork2/htdocs/tmp is set up in exactly the same way we
suggest people set up /var/www/wwtmp.  There is no real reason now
for people to have to set up /var/www/wwtmp.
Merge pull request #60 from apizer/master

Change default location of course specific tmp files
removed errant submodule references
Removed errant submodule references
Merge branches 'openwebwork-dev' and 'master'
Fixed OPL-update to use libraryVersion from \$ce  rather than a VERSION file
Changed cherry-picked from webwork2/master 4663e15316233ec81d56ff75ca7113d5ded9ca1b
CONFIG-README directions out of date and superceeded by directions in README"