Import licenses from SPDX

Fixes #326

app/templates/admin/licenses/edit.html

@@ -12,12 +12,13 @@
 	<a class="btn btn-primary float-right" href="{{ url_for('admin.create_edit_license') }}">New License</a>
 	<a class="btn btn-secondary mb-4" href="{{ url_for('admin.license_list') }}">Back to list</a>
 
-	{% from "macros/forms.html" import render_field, render_submit_field %}
+	{% from "macros/forms.html" import render_field, render_checkbox_field, render_submit_field %}
 	<form method="POST" action="" enctype="multipart/form-data">
 		{{ form.hidden_tag() }}
 
 		{{ render_field(form.name) }}
-		{{ render_field(form.is_foss) }}
+		{{ render_checkbox_field(form.is_foss) }}
+		{{ render_field(form.url) }}
 		{{ render_submit_field(form.submit) }}
 	</form>
 {% endblock %}

app/templates/packages/view.html

@@ -16,6 +16,14 @@
 	{% endif %}
 {% endblock %}
 
+{% macro render_license(license) %}
+	{% if license.url %}
+		<a href="{{ license.url }}">{{ license.name }}</a>
+	{% else %}
+		{{ license.name }}
+	{% endif %}
+{% endmacro %}
+
 {% block container %}
 	{% if not package.license.is_foss and not package.media_license.is_foss and package.type != package.type.TXP  %}
 		{% set package_warning="Non-free code and media" %}
@@ -363,12 +371,12 @@
 					<dt>{{ _("License") }}</dt>
 					<dd>
 						{% if package.license == package.media_license %}
-							{{ package.license.name }}
+							{{ render_license(package.license) }}
 						{% elif package.type == package.type.TXP %}
-							{{ package.media_license.name }}
+							{{ render_license(package.media_license) }}
 						{% else %}
-							{{ package.license.name }} for code,<br />
-							{{ package.media_license.name }} for media.
+							{{ render_license(package.license) }} for code,<br />
+							{{ render_license(package.media_license) }} for media.
 						{% endif %}
 					</dd>
 					<dt>Added</dt>