Implemented pagination for student details.
Resolved conflicts.

Conflicts:

src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/UnitAssignmentView.java

src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/personalize/PersonalizeUnitView.java
Merge pull request #1828 from VinRudramurthy/dev-branch

Implemented pagination for student details.