fix name collision in article model

apps/rp/models/article.py

@@ -2,7 +2,8 @@ from django.db import models
 from django.utils.translation import ugettext_lazy as _
 from taggit.managers import TaggableManager
 from .vote import UnDVotedMixin
-from newspaper import Article
+from newspaper import Article as ArticleParser
+
 
 class Article(UnDVotedMixin):
     url = models.URLField("URL")
@@ -27,7 +28,7 @@ class Article(UnDVotedMixin):
         return self.title
 
     def parse(self):
-        article = Article(url=self.url, language=self.lang)
+        article = ArticleParser(url=self.url, language=self.lang)
         article.download()
         article.parse()
         self.title = article.title