Cleaned up the layout of the search box on the Network HomePage and AdvSearchPage, and added placeholders for suggested search keywords. Removed duplicate Search button from AdvSearchPage, and the Cancel button which is unnecessary. Changed the color of Cancel/Exit buttons across the site to be red, and made Search/Load More Files buttons blue. Cleaned up layout of FITS search on AdvSearchPage. Minor layout and messaging revisions to the StudyFileFragment, Load More Files functionality. [ref 2770, 2712, 2711, 2801]
Merge branch 'develop' of github.com:IQSS/dvn.git into develop