Fixed adding criterion for assignments under the 'flexible' marking scheme. The functionality to add, delete, get the sum of marks, and flash messages for flexible criterion did not work.
Review board fixes
Merge branch 'master' into issue745
added resque as gem and installed it
added resque.rake for creating worker task
add rvmrc file integration
added rvmrc!
add bundler install and gemset and ruby creation to rvmrc
added .use-ruby option
added ignore .use-ruby-* to gitignore
Merge branch 'master' into resque
Added code stub for Automated Test
added sample automated test result
added libxml gem
added libxml ruby
added xml parsing code
added automated_tests model
finished saving test result xml to database
added to scaffold to test workers
Workers working now

Moved process result code to the controller and tested the functionality
of the workers. The workers work on this commit.
Filled in more code for automated test
code added for launching test
Added some tests
Added some configuration constants.