Allow config to specify grid "page size" options

tailbone/grids/core.py

@@ -1053,7 +1053,15 @@ class Grid(object):
                              checked=self.checked(item))
 
     def get_pagesize_options(self):
-        # TODO: Make configurable or something...
+
+        # use values from config, if defined
+        options = self.request.rattail_config.getlist('tailbone', 'grid.pagesize_options')
+        if options:
+            options = [int(size) for size in options
+                       if size.isdigit()]
+            if options:
+                return options
+
         return [5, 10, 20, 50, 100, 200]
 
     def has_static_data(self):