Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Added loading Icons for path way.
Resolved conflicts.

Conflicts:

src/main/java/org/ednovo/gooru/client/mvp/classpages/unitSetup/unitsetup.css
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1658 from VinRudramurthy/dev-branch

Added loading Icons for path way.
UI changes for student page
Merge pull request #1659 from ssushma/dev-branch

UI changes for student page
New images committed
Addded loading Icon foe class set up and unit set up
Merge pull request #1660 from VinRudramurthy/dev-branch

Addded loading Icon foe class set up and unit set up
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
improvements on suggested time validations
Null handling implemented for old classes
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1661 from ssushma/dev-branch

Null handling implemented
"implemented set goal functionality."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1662 from RavindderV/dev-branch

improved the validation on suggested time
implemented edit assignment details funtionality
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch

Conflicts:
	src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/UnitAssignmentView.java
	src/main/java/org/ednovo/gooru/server/service/ClasspageServiceImpl.java