Changes to validate and implement dates entered on newspaper search screen.
Changes to CSS for newspaper search 3 column layout.
Code to add newspaperCModel objects to Collections tab and remove specific PIDs (that are departments)
Merge branch '7.x-newspaper-date-limits' into 7.x

* 7.x-newspaper-date-limits:
  Changes to CSS for newspaper search 3 column layout.
  Changes to validate and implement dates entered on newspaper search screen.