Added default text if there is no assignments in pathway at unit setup.
Resolved Conflicts.

Conflicts:

src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.java

src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.properties
Merge pull request #1710 from VinRudramurthy/dev-branch

Added default text if there is no assignments in pathway at unit setup.