Major housekeeping and getting in line with rest of projects w.r.t. ivy builds
Backed off on the ivysettings file a bit... will look more into it after this release cut
Merge branch 'devel' of esgf.org:esgf-web-fe into devel
Merge branch 'devel' of github.com:ESGF/esgf-web-fe into devel
Merge branch 'devel' of github.com:ESGF/esgf-web-fe into devel
Datacart fix:

Datasets with files that were published with no tracking id or checksum values could not be displayed.  This was fixed by allowing null values and displaying N/A in those cases
Changed DKRZ node name and link on the home page
Cosmetic change to welcome page
Merge branch 'devel' of github.com:ESGF/esgf-web-fe into devel