XMLUI: Add initial theme for HUMIDTROPICS

From Sisay Webshet
Move HUMIDTROPICS -> Humidtropics

It's not an acronym and it just looks loud
XMLUI: More cleanup for Humidtropics rename
XMLUI: Remove unused file in Humidtropics theme
XMLUI: Remove a few more unused images in Humidtropics theme
XMLUI: Fixes for Humidtropics banner
XMLUI: Fix margins on Humidtropics file listings
XMLUI: Add Atmire stats to Humidtropic theme
XMLUI: CSS fixes for thumbnail size in Humidtropics theme
XMLUI: CSS fixes for item list styles

The fonts should be the same size as the rest of the page.
XMLUI: Clean up some cruft in Humidtropics theme
XMLUI: Country should be Country Focus in the item list
xmlui.xconf: Update community handle for Humidtropics

Now that it's imported into CGSpace, we have the correct handle id
Merge branch '3_x-dev' into 3_x-prod