Add staging settings file

SciPost_v1/settings/staging_1.py

+# Used on staging server with IP http://146.185.181.185/
+# A Digital Ocean setup
+
+from .base import *
+
+# THE MAIN THING HERE
+DEBUG = True
+ALLOWED_HOSTS = ['146.185.181.185']
+
+# Static and media
+STATIC_ROOT = '/home/django/scipost_v1/static/'
+MEDIA_ROOT = '/home/django/scipost_v1/media/'
+WEBPACK_LOADER['DEFAULT']['BUNDLE_DIR_NAME'] = '/home/django/scipost_v1/static/bundles/'
+
+JOURNALS_DIR = 'journals_dir'