Revert "Request publish_actions in devise.rb sample initializer file"
remove 'Share on Facebook' for achievement notification
Merge pull request #173 from fonglh/revert-169-devise-publish-actions

Revert "Request publish_actions in devise.rb sample initializer file"
fix duplication of assessment in duplication page
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
fix for unable to update general question
fix for creating tag in question
fix double serving of assets in development env
fix edit role request error
Fix question no position & dependency bug after duplication
refine fixing
set dependency_id to nil if pos < depend_pso
reduce line length
Using a smart way to handle position
Also fixed the course duplication denpendency problem
Merge pull request #175 from wangqiang1208/bugfixing/course_duplication

Fix assessment duplication bug in duplicate page
add attr_accessbile to assessment answer model
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
fix for mission dependency
fix dependency in mission overview page