Merge pull request #534 from anilgooru/dev-branch

Fixed : New UI Issues for assignment progress.
When there are no assignments, a new UI added and pagination issues resolved, when a user deletes a assignment or adds an assignment.
When there are no assignments, a new UI added and pagination issues resolved, when a user deletes a assignment or adds an assignment.
When there are no assignments, a new UI added and pagination issues resolved, when a user deletes a assignment or adds an assignment.
Merge pull request #535 from ssushma/dev-branch

When there are no assignments, a new UI added and pagination issues resolved, when a user deletes a assignment or adds an assignment.
Drop list added with sort options in teach mode.
Merge pull request #536 from ssushma/dev-branch

Drop list added with sort options in teach mode.
Update Progress bar on assign and deleting assignment.