CSS for assignment progress
Updated message properties.
Added Assignment Progress UI
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  implemented NGSS to Standards Preference
  Removed privacy message in signup for e-mail
  Changed text from Lexile Level to Reading Level
  Added Static text to MP file.
  Implemented privacy message
  Reverted DnD changes made for re-ordering
  "Fix the position of navigation bar in player."
  "[FE] Add Classcode to Classes in Teach Implemented."
  "[FE] Add Classcode to Classes in Teach Implemented."
  "Show admin role in Settings."
  created initial support for DnD for the folders.
  Test commit for github
  Text changes for email template implemented.
  "DO-4656,DO-4662 and DO-4647 fixed."

Conflicts:
	src/main/java/org/ednovo/gooru/client/mvp/classpages/edit/editclasspage.css
	src/main/java/org/ednovo/gooru/shared/util/MessageProperties.java
Update edit class page.
Updated Assignment progress UI.
Merge pull request #483 from anilgooru/dev-branch

UI Implementation for Assessment Progress