fixed some backend bugs, did about, not done

poem_server/app/views.py

@@ -6,3 +6,15 @@ from random import choice, sample
 @route_get('lines/random', args={})
 def get_random_line(params):
     return {'line': Line.objects.random().text}
+
+@route_get('lines/about', args={'topic': str})
+def get_about_line(params):
+    word = params['topic']
+    if not Line.objects.filter(clean_text__contains=word):
+        raise NotFound("no line with that topic")
+    line = Line.objects.filter(clean_text__contains=word).random()
+    retval = {'line': line.text, 'topic' : word}
+    return retval
+
+
+