fixed routing bug to course preference updates
current exp for assessment
fix update training multiparameter error
fix creating announcement
fix unable to access my courses page
fix unable to access user course page and achievement page
fix staff leaderboard
fix training stats page
fix access denied in various pages
Merge pull request #75 from weiqingtoh/wq-unpublish

Fixed routing bug when updating course preferences
Merge branch 'development' of github.com:Coursemology/coursemology.org into Deploy
precompiled assets