input-forms.xml: Remove ILRI forms

We will now use the generic input forms.
input-forms.xml: Use default forms for Nile Basin
xmlui: Add new metadata fields to CRP3.7 theme
xmlui: Clean up whitespace in CRP3.7 item-view.xsl

In vim, for tab/space mix:

    :retab

Then in sed, for blank lines with spaces:

    sed -i 's/^[ \t]*$//' dspace/modules/xmlui/src/main/webapp/themes/CRP3.7/lib/xsl/aspect/artifactbrowser/item-view.xsl
Merge branch '3_x-dev-crp37' into 3_x-dev
Merge branch '3_x-dev-forms' into 3_x-dev
news-xmlui.xml: Update welcome page text
input-forms.xml: Add SOCIAL LEARNING subject to ILRI and CCAFS submission forms
Merge branch '3_x-dev' into 3_x-prod
Merge branch '3_x-dev' into 3_x-prod
Merge branch '3_x-dev' into 3_x-prod
xmlui: Use "Subject Focus" for IWMI XMLUI theme
XMLUI: Set max-width for item thumbnails in CSS

Now that we're generating larger PDF thumbnails, we need to restrict
the size in CSS.
XMLUI: Set left indent for files list table
dspace.cfg: Enable larger max thumbnail sizes
dspace.cfg: Enable XPDF filter for PDF thumbnails

Requires XPDF to be installed and configured, see section 6.4.2 of
the DSpace manual for more information.
xmlui: Fix double style tags in ILRI theme
xmlui: Re-work XMLUI themes for new thumbnails

When using filter-media with xpdf we can get automatic thumbnails
at a much higher resolution (300x300px right now), so we need to
hard code a sensible thumbnail size in the XMLUI so the browser
scales it down (otherwise it uses $thumbnail.maxwidth from dspace.cfg
and the XMLUI gets ugly due to the xsl performing CSS math based on
that value).
xmlui: Update WLE theme for new thumbnail dimensions
Merge branch '3_x-dev-thumbnails' into 3_x-dev