add test cases for missions
change the test database name
Merge pull request #154 from wangqiang1208/testing/env

change the test database name
Merge pull request #144 from wangqiang1208/testing/mission-tests

add test cases for missions
Fix training paging not functional bug
Merge pull request #155 from wangqiang1208/bugfixing/training_paging

Fix training paging not functional bug
fix error page when redirecting student to assessment access denied
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
Merge branch 'development' of github.com:Coursemology/coursemology.org into Deploy