PY-16914 Better formatting in Numpy docstring with multiple return values

Bullet lists with return values have proper spacing on the left.
Parameter names (including "returns") are aligned to the top.

python/helpers/rest_formatter.py

@@ -2,7 +2,7 @@ import sys
 import re
 from docutils.core import publish_string
 from docutils import nodes
-from docutils.nodes import Text
+from docutils.nodes import Text, field_body, field_name
 from docutils.writers.html4css1 import HTMLTranslator
 from epydoc.markup import DocstringLinker
 from epydoc.markup.restructuredtext import ParsedRstDocstring, _EpydocHTMLTranslator, \
@@ -83,6 +83,13 @@ class RestHTMLTranslator(_EpydocHTMLTranslator):
         # iterate through attributes one at a time because some
         # versions of docutils don't case-normalize attributes.
         for attr_dict in attr_dicts:
+            # For some reason additional classes in bullet list make it render poorly.
+            # Such lists are used to render multiple return values in Numpy docstrings by Napoleon.
+            if tagname == 'ul' and isinstance(node.parent, field_body):
+                attr_dict.pop('class', None)
+                attr_dict.pop('classes', None)
+                continue
+
             for (key, val) in attr_dict.items():
                 # Prefix all CSS classes with "rst-"; and prefix all
                 # names with "rst-" to avoid conflicts.
@@ -93,8 +100,10 @@ class RestHTMLTranslator(_EpydocHTMLTranslator):
                 elif key.lower() == 'href':
                     if attr_dict[key][:1] == '#':
                         attr_dict[key] = '#rst-%s' % attr_dict[key][1:]
-                    else:
-                        pass
+
+        if tagname == 'th' and isinstance(node, field_name):
+            attributes['valign'] = 'top'
+
         # For headings, use class="heading"
         if re.match(r'^h\d+$', tagname):
             attributes['class'] = ' '.join([attributes.get('class', ''), 'heading']).strip()