static: Don't try to render non-template files as templates.

www/conservancy/static/views.py

@@ -1,3 +1,4 @@
+import mimetypes
 import os.path
 from django.http import HttpResponse
 from django.template import RequestContext, loader
@@ -35,7 +36,6 @@ def fundgoal_lookup(fundraiser_sought):
         return None
 
 def index(request, *args, **kwargs):
-    # return HttpResponse("Hello, static world: " + request.get_full_path())
     path = request.path
     try:
         path_bytes = path.encode(FILESYSTEM_ENCODING)
@@ -46,8 +46,12 @@ def index(request, *args, **kwargs):
         path += u'index.html'
     fullpath = os.path.join(STATIC_ROOT, path_bytes)
     if not os.path.exists(fullpath):
-        # return HttpResponse("Sorry that's a 404: " + path)
         return handler404(request)
+    content_type, _ = mimetypes.guess_type(path)
+    if content_type != 'text/html':
+        content = open(fullpath)
+    else:
+        content_type = None  # Let Django use its default
         template = loader.get_template(path)
 
         kwargs = kwargs.copy()
@@ -57,7 +61,8 @@ def index(request, *args, **kwargs):
         kwargs['sitefundgoal'] = fundgoal_lookup('supporterrun')
 
         context = RequestContext(request, kwargs)
-    return HttpResponse(template.render(context))
+        content = template.render(context)
+    return HttpResponse(content, content_type)
 
 def debug(request):
     path = request.get_full_path()