Merge pull request #60 from goehle/upgraded2.7

Problem Content Width Bug
Remove stray single quote after the problem-contents div
Add call to Base64.js script to GatewayQuiz.pm

This allows knowles to work properly in quizzes.
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into release/2.7
Merge pull request #62 from mgage/release/2.7

Add call to Base64.js script to GatewayQuiz.pm
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into upgraded2.7