WP=2790: publications listing theming.
WP-2790: theme filters on publication listing.
WP-2790: add black border top.
WP-2852: adjust spacing and type.
WP-2857: update the detail page styling.
WP-2801: Added styling for Library Chat Block
WP-2801: add gsb chat icon.
WP-2801: add documentation.
WP-2801: Added chat icon and aligned helptext
Merge branch 'WP-2801' of github.com:gsbitse/gsb_theme into WP-2801