Move loncapa grading helpers into the sandbox-packages directory.
Wrap the lines so I can read the text.
Change the file paths to be less specific.
Somehow, when I moved symmath, I left behind its test files!?
Move symmath to be its own directory, and install it into the sandbox.
Merge pull request #23 from edx/ned/move-loncapa-etc-into-sandbox

Ned/move loncapa etc into sandbox