Sort result files for sorted download buttons.

app/main/views.py

@@ -31,7 +31,7 @@ def corpus(corpus_id):
                        'corpora',
                        str(corpus.id))
     files = {}
-    for file in os.listdir(dir):
+    for file in sorted(os.listdir(dir)):
         files[file] = {}
         files[file]['path'] = os.path.join(file)
 
@@ -110,7 +110,7 @@ def job(job_id):
                        'jobs',
                        str(job.id))
     files = {}
-    for file in os.listdir(dir):
+    for file in sorted(os.listdir(dir)):
         if file == 'output':
             continue
         files[file] = {}