added new style.
Updated lifeboard banner image.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  fixed sign up issue and standards
  "6.5.c Parallel [District Library] Lesson level text should not be bold Fixed."
  Library: Issue fixed with Course dropdown missing from subject tabs at contributors page.
  "6.1.5 [FE] Clicking "Bold" before typing text results in additional question mark in questions Fixed."
Updated banner content.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  redirection old player url to new player functionality has been implemented.
  fixed css issue for Lifeboard in IE
  "6.4 [My Collections] UI: The user alert message is displayed below the copy resource drop down. Fixed."
  Fixed Closing the resource player Collection tab is selected + Resource/collections(count) tab is not displayed
  DO-5205, DO-5352 issues has been fixed.
  fixed ui issue bugs.
Merge pull request #1351 from anilgooru/dev-branch

added new style.