Fix contest page range issue
Merge pull request #251 from mzry1992/contest-page-range-issue

Fix contest page range issue
Fix gradle build script
Merge pull request #253 from mzry1992/training-system

Fix gradle build script
Add deduct rating feature
Add topcoder rank list parser
Modify x-label of training rating chart
Merge pull request #254 from mzry1992/training-system

Add deduct rating feature
Add select user feature in rating chart
Add tooltip in rating chart
Merge pull request #255 from mzry1992/training-system

Add select user feature in rating chart
Add -lm to c compile command to avoid compile error when use math library
Merge pull request #256 from mzry1992/training-system

Add -lm to c compile command to avoid compile error when use math library
Remove submodule plugins
Move static/cdoj to static
Complete refactor