fixed errors
Merge branch 'master' into test-logic
started work on level adjustment
added exception type for an empty database
Merge branch 'master' of ssh://github.com/PeterDrake/Language
fixed merge errors
started implementing level adjustment
Implemented level adjustment.
Linked progress tracker with studentresults page.
fixed bug with FillInTheBlank question
Added functionality to results page,displays result of test with instructions on what to do now
Wrote tests for the progress tracker and added createLargeDatabase to the database generator
Merge branch 'master' into test-logic
added MAX_ITERATIONS
fixed conflicts