Introducing scheme for url generation

This requires a new SCHEME value in the config. Prevents browser
warnings about insecure links when working with https.

pillar/application/__init__.py

@@ -369,7 +369,8 @@ def generate_link(backend, file_path, project_id=None):
         blob = storage.Get(file_path)
         link = blob['signed_url']
     elif backend == 'pillar':
-        link = url_for('file_storage.index', file_name=file_path, _external=True)
+        link = url_for('file_storage.index', file_name=file_path, _external=True,
+        _scheme=app.config['SCHEME'])
     elif backend == 'cdnsun':
         link = hash_file_path(file_path, None)
     else:

pillar/config.py.example

@@ -11,6 +11,7 @@ class Config(object):
 
 
 class Development(Config):
+    SCHEME = 'http'
     STORAGE_DIR = '{0}/application/static/storage'.format(
         os.path.join(os.path.dirname(__file__)))
     SHARED_DIR = '/storage/shared'