Fix relation type
Merge branch 'master' of github.com:stucsie/stu-online-judge

* 'master' of github.com:stucsie/stu-online-judge:
  Add getRunOutput doc
  Fix typo
  Fix java compiling Different path error
  Revise exception for JudgeService
  refactor condition
  Revise typo for JudgeService
  Add getRunOutput function for JudgeService
Remove java extension name
check file exist with path
Add execute_time and output column to solution model
Add getUser method to BaseController
Add JudgeJob
Implement basic solveAction