Fix a bug of "run-button not functional when there were any errors."
refine code
remove extra blanks
fix contest survey summary view
Merge pull request #208 from wangqiang1208/bugfixing/code-run-button

Fix a bug of "run-button not responding when there were any errors."
Merge pull request #211 from wangqiang1208/bugfixing/survey-summary

fix contest survey summary view
fix survey contest submission status issue
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
fix survey contest, eliminate usage of current_qn
[Survey] done? check to be >=