disable grading saving button after submit to prevent duplicate requests
refine achievement tests code
add a test case for destroy action
Merge pull request #273 from wangqiang1208/test/hackathon-tests

re-write announcement test cases( refine coding style )
Merge pull request #274 from wangqiang1208/bugfixing/gradings-saving-double-clicking-duplicate-requests

disable grading saving button after click submit to prevent duplicate requests
remove all compiled assets
Merge branch 'development' of github.com:Coursemology/coursemology.org into development
set server static assets to true in development
parse creator as argument to course, now we can directly create course, no need through UI
Merge remote-tracking branch 'upstream/development' into test/hackathon-tests
let announcement test to use factroy girl to create course
Add lesson plan entry tests
Merge pull request #278 from wangqiang1208/test/hackathon-tests

Add functionality so that factroygirl can directly create course and enrol creator
Add fuubar
Update Gemfile
s/should//
Merge pull request #281 from jsyeo/jsyeo-fuubar

Add fuubar
Merge pull request #279 from jsyeo/jsyeo-lesson-plan-tests

Add lesson plan entry tests
Merge pull request #6 from Coursemology/development

Merge latest development code