Merge pull request #2050 from codalab/datasets_updates

`Datasets PR#2` Croissant metadata added

Author: ObadaS

src/apps/api/serializers/datasets.py

@@ -27,6 +27,7 @@ class Meta:
             'was_created_by_competition',
             'competition',
             'file_name',
+            'license'
 
         )
         read_only_fields = (

src/templates/datasets/detail.html

@@ -1,4 +1,35 @@
 {% extends "base.html" %}
+
+{% block extra_head %}
+    <!-- JSON LD Script for Dataset Search -->
+    <script type="application/ld+json">
+    {
+        "@context": {
+            "@language": "en",
+            "@vocab": "https://schema.org/",
+            "croissant": "https://mlcommons.org/croissant/1.0"
+        },
+        "conformsTo": "http://mlcommons.org/croissant/1.0",
+        "@type": "Dataset",
+        "name": "{{ object.name|escape }}",
+        "description": "{{ object.description|escape }}",
+        "url": "{{ request.build_absolute_uri }}",
+        "creator": {
+            "@type": "Person",
+            "name": "{{ object.created_by|escape }}"
+        },
+        "datePublished": "{{ object.created_when }}",
+        "license": {
+            "@type": "CreativeWork",
+            "name": "{{ object.license|escape }}"
+        },
+        "citation": "-",
+        "version": 1.0
+    }
+    </script>
+{% endblock %}
+
+
 {% block content %}
     <dataset-detail 
         id='{{ object.id }}'