Change how goodread import writes reviews

- adds published date
 - broadcasts review imports
 - completes review and shelve actions as it goes
 - some small connector fixes

 fixes #247

bookwyrm/models/import_job.py

@@ -40,8 +40,7 @@ class ImportJob(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     created_date = models.DateTimeField(default=timezone.now)
     task_id = models.CharField(max_length=100, null=True)
-    import_status = models.ForeignKey(
-        'Status', null=True, on_delete=models.PROTECT)
+
 
 class ImportItem(models.Model):
     ''' a single line of a csv being imported '''
@@ -71,6 +70,8 @@ class ImportItem(models.Model):
                 return books_manager.get_or_create_book(search_result.key)
             except ConnectorException:
                 pass
+        return None
+
 
     def get_book_from_title_author(self):
         ''' search by title and author '''
@@ -84,6 +85,8 @@ class ImportItem(models.Model):
                 return books_manager.get_or_create_book(search_result.key)
             except ConnectorException:
                 pass
+        return None
+
 
     @property
     def isbn(self):
@@ -95,6 +98,7 @@ class ImportItem(models.Model):
         ''' the goodreads shelf field '''
         if self.data['Exclusive Shelf']:
             return GOODREADS_SHELVES.get(self.data['Exclusive Shelf'])
+        return None
 
     @property
     def review(self):
@@ -111,12 +115,14 @@ class ImportItem(models.Model):
         ''' when the book was added to this dataset '''
         if self.data['Date Added']:
             return dateutil.parser.parse(self.data['Date Added'])
+        return None
 
     @property
     def date_read(self):
         ''' the date a book was completed '''
         if self.data['Date Read']:
             return dateutil.parser.parse(self.data['Date Read'])
+        return None
 
     @property
     def reads(self):
@@ -126,6 +132,7 @@ class ImportItem(models.Model):
             return [ReadThrough(start_date=self.date_added)]
         if self.date_read:
             return [ReadThrough(
+                start_date=self.date_added,
                 finish_date=self.date_read,
             )]
         return []