Make automated_tests_helper.rb ruby-1.8.7 compatible
Add jquery.js library
Import jquery.js in the ATE student interface
Modified automated_tests_helper.rb to use open4 instead of open3 (in order to obtain the exit status of a process, for more accurate processing), added open4 to the Gemfile, modified .gitignore so it doesn't catch silly things like .DS_Store.
Partially reverted changes to .gitignore, kept ignoring of .DS_Store to help keep the repository clean.
Merge pull request #1 from JeremyMerkur/ATE_prototype_stable

Modifies test-framework to be compatible with Ruby 1.8.7.