Move travis-ci related settings files into their own module.

mayan/settings/testing/travis/db_mysql.py

@@ -0,0 +1,11 @@
+from __future__ import unicode_literals
+
+from ..base import *  # NOQA
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'mayan_edms',
+        'USER': 'travis',
+    }
+}