gco:date field is shown with time option

[pvgenuchten]

suggestion from @josegar74:

Most date fields in the editor are handled with gn-date-picker directive, at least for 3.4.x seem possible to configure an attribute hideTimeInCalendar in the view, but requires also to enable some xslt code to handle that.

Example:

<view name="default" hideTimeInCalendar="true">

What I would do is to copy this template:

https://github.com/geonetwork/core-geonetwork/blob/3.4.x/schemas/iso19139/src/main/plugin/iso19139/layout/layout-custom-fields-date.xsl#L77-L150

To https://github.com/.../src/main/plugin/iso19139.nl.geografie.1.3.1/layout/layout-custom-fields.xsl

Doing these changes in the match and the directive section: https://github.com/geonetwork/core-geonetwork/blob/3.4.x/schemas/iso19139/src/main/plugin/iso19139/layout/layout-custom-fields-date.xsl#L124-L128

<xsl:template mode="mode-iso19139" 
                priority="2005" 
                match="gmd:CI_Date/gmd:date[$schema='iso19139.nl.geografie.1.3.1']">

  ...

   <div data-gn-date-picker="{gco:Date|gco:DateTime}" 
             data-label="" 
             data-hide-time="true" 
             data-element-name="{name(gco:Date|gco:DateTime)}" 
             data-element-ref="{concat('_X', gn:element/@ref)}">
        </div>

...

</xsl:template>