fix the inherited style problem, and a mistake missing import

Author: acrosby

folium/plugins/timestamped_wmstilelayer.py

@@ -21,6 +21,7 @@
 
 from jinja2 import Template
 
+from branca.element import Figure, JavascriptLink, CssLink
 from ..map import Layer
 
 
@@ -107,7 +108,6 @@ def __init__(self, data, transition_time=200, loop=False, auto_play=False,
         {% endmacro %}
         """)
 
-
     def render(self, **kwargs):
         super(TimestampedWmsTileLayer, self).render()