Add custom default grid row size for Trainwreck items

seems like 100 rows is way more useful for this one

tailbone/views/master.py

@@ -87,6 +87,7 @@ class MasterView(View):
     rows_deletable = False
     rows_deletable_speedbump = False
     rows_bulk_deletable = False
+    rows_default_pagesize = 20
 
     mobile_rows_viewable = False
 
@@ -527,6 +528,7 @@ class MasterView(View):
             'filterable': self.rows_filterable,
             'sortable': self.rows_sortable,
             'pageable': True,
+            'default_pagesize': self.rows_default_pagesize,
             'row_attrs': self.row_grid_row_attrs,
             'model_title': self.get_row_model_title(),
             'model_title_plural': self.get_row_model_title_plural(),

tailbone/views/trainwreck.py

@@ -51,6 +51,7 @@ class TransactionView(MasterView):
 
     has_rows = True
     # model_row_class = trainwreck.TransactionItem
+    rows_default_pagesize = 100
 
     def _preconfigure_grid(self, g):
         g.filters['receipt_number'].default_active = True