Rendering the Standard, District Libraries from properties file.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  Added New images for no-assignment classpage.
  DO-5203 issue has been fixed.
  Handled null at class pages.
  "Modified and added new static text in MessageProperties file"

Conflicts:
	src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.java
	src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.properties
Merge pull request #1252 from anilgooru/dev-branch

Rendering the Standard, District Libraries from properties file.