Merge pull request #554 from ssushma/dev-branch

Sorting on study mode implemented.
Merge pull request #556 from ssushma/dev-branch

The Move functionality issue of adding multiple assignments on move solv...
Moved static text to message properties file.
Merge pull request #558 from anilgooru/dev-branch

Moved static text to message properties file.
implemented tag resource API
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #559 from nutan-gooru/dev-branch

implemented tag user resource API
fixed css
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #560 from nutan-gooru/dev-branch

fixed css issue
fixed tag issue
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #561 from nutan-gooru/dev-branch

fixed tag issue
"Copy resource popup media script modified."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
fixed css issue in popup and remove system.out
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Fixed Issues:
1.After adding new collections sorting option has been changed to
recently added.
2.After deleting assigment updating the collections view.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
fixed button enable issue