Refactor package URL generation

app/templates/packages/alias_create_edit.html

@@ -5,11 +5,11 @@
 {% endblock %}
 
 {% block link %}
-	<a href="{{ package.getDetailsURL() }}">{{ package.title }}</a>
+	<a href="{{ package.getURL("packages.view") }}">{{ package.title }}</a>
 {% endblock %}
 
 {% block content %}
-<a class="btn btn-secondary" href="{{ package.getAliasListURL() }}">Back to Aliases</a>
+<a class="btn btn-secondary" href="{{ package.getURL("packages.alias_list") }}">Back to Aliases</a>
 
 {% from "macros/forms.html" import render_field, render_submit_field, render_toggle_field %}
 <form method="POST" action="" enctype="multipart/form-data" class="mt-4">