Organize global substitution code

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

docs/utils.py

@@ -0,0 +1,21 @@
+from __future__ import unicode_literals
+
+
+def load_env_file(filename='../config.env'):
+    result = {}
+    with open(filename) as file_object:
+        for line in file_object:
+            if not line.startswith('#'):
+                key, value = line.strip().split('=')
+                result[key] = value
+
+    return result
+
+
+def generate_substitutions(dictionary):
+    result = []
+
+    for key, value in dictionary.items():
+        result.append(('|{}|'.format(key), value))
+
+    return result