fixed small markup issue
renamed class for correctness
shifted css-class for correctness
update attributes in coding_question create
set default mem time attempt limit to coding questions
show hints of private test cases in missions
refine code as hound suggests
Merge pull request #227 from weiqingtoh/bug/mission-attempt-alignment

Bug/mission attempt alignment
use a function to set hints for both mission and training
refine code
Add javascript style checking to hound🐶
remove empty answers
Merge pull request #229 from wangqiang1208/bugfixing/mission-hints-for-private-test

show hints of private test cases in missions
Merge pull request #231 from jsyeo/jsyeo-enable-js

Add javascript style checking to hound🐶
strip string before compare
set auto_graded to true if coding question is in training
Merge pull request #233 from wangqiang1208/bugfixing/survey-summary-blank-answer

remove empty answers in survey summary
Merge pull request #228 from wangqiang1208/bugfixing/mission-attempt-left

Accept & set default value of coding questions
remove function set hints in trainings
Merge pull request #235 from wangqiang1208/bugfixing/mission-hints-for-private-test

remove function set hints in trainings