use partials for data rows in organisation timelines

layouts/partials/cv/organisation/get_role_end_date.html

@@ -0,0 +1,21 @@
+<!--
+    Renders a role's end date, or today if none is set.
+
+    @params .   Role start date. Can be undefined.
+    @return Date
+-->
+
+<!-- Variable Initialisation -->
+
+{{- $end_date := "" -}}
+
+
+<!-- Rendering -->
+
+{{- if . -}}
+  {{- $end_date = . -}}
+{{- else -}}
+  {{- $end_date = ( now.Format "2006-01-02" ) -}}
+{{- end -}}
+
+{{- return ( printf "new Date('%s')" $end_date ) -}}