Generate PDFs from Power Test Records (#594)

* Add new block to base_print.xml for additional styles from downstream templates

* Fix page totals on exports by adding <namedString> element

* Add new print template for power test records

* Add a generated name property to power tests to allow for export

* Add new routes for print export for power tests

* Add print button to power test records view page

* Address linting errors

RIGS/models.py

@@ -943,6 +943,10 @@ class PowerTestRecord(ReviewableModel, RevisionMixin):
     def activity_feed_string(self):
         return str(self.event)
 
+    @property
+    def name(self):
+        return f"Power Test Record - {self.event}"
+
 
 class EventCheckIn(models.Model):
     event = models.ForeignKey('Event', related_name='crew', on_delete=models.CASCADE)