input-forms.xml: Fix mistake in CIAT input forms

GENDER AND EQUITY was being stored as GENETIC RESOURCES.
input-forms.xml: Remove duplicate SOIL LANDSCAPES from CIAT subject terms
CIAT Subject Focus:item-list.xsl
input-forms.xml: Update ILRI subjects to add new terms

Fixes GitHub issue #20.
input-forms.xml: Change HUMIDTROPICS to HUMID TROPICS

ILRI's subject term is different than the Humidtropics project's
subject term.

GitHub issue #19.
Merge branch 'ilri-subjects' into 3_x-dev
Merge branch '3_x-dev' into 3_x-prod