Clarifies wording on pending imports

Fixes #1118

bookwyrm/templates/import_status.html

@@ -7,6 +7,7 @@
 {% block content %}{% spaceless %}
 <div class="block">
     <h1 class="title">{% trans "Import Status" %}</h1>
+    <a href="{% url 'import' %}" class="has-text-weight-normal help subtitle is-link">{% trans "Back to imports" %}</a>
 
     <dl>
         <div class="is-flex">
@@ -106,7 +107,11 @@
 {% endif %}
 
 <div class="block">
+    {% if job.complete %}
     <h2 class="title is-4">{% trans "Successfully imported" %}</h2>
+    {% else %}
+    <h2 class="title is-4">{% trans "Import Progress" %}</h2>
+    {% endif %}
     <table class="table">
         <tr>
             <th>

bookwyrm/views/import_data.py

@@ -78,13 +78,15 @@ class ImportStatus(View):
 
     def get(self, request, job_id):
         """status of an import job"""
-        job = models.ImportJob.objects.get(id=job_id)
+        job = get_object_or_404(models.ImportJob, id=job_id)
         if job.user != request.user:
             raise PermissionDenied
+
         try:
             task = app.AsyncResult(job.task_id)
         except ValueError:
             task = None
+
         items = job.items.order_by("index").all()
         failed_items = [i for i in items if i.fail_reason]
         items = [i for i in items if not i.fail_reason]