modernize sqlalchemy to support new postgres

Author: jwise

appstore/settings.py

@@ -5,7 +5,7 @@
 
 config = {
     'DOMAIN_ROOT': domain_root,
-    'SQLALCHEMY_DATABASE_URI': os.environ['DATABASE_URL'],
+    'SQLALCHEMY_DATABASE_URI': os.environ['DATABASE_URL'].replace("postgres://","postgresql://"),
     'PBW_ROOT': os.environ.get('PBW_ROOT', f'http://pbws.{domain_root}/pbw'),
     'IMAGE_ROOT': os.environ.get('IMAGE_ROOT', f'https://assets.rebble.io'),
     'APPSTORE_ROOT': os.environ.get('APPSTORE_ROOT', f'http://apps.{domain_root}'),

requirements.txt

@@ -17,12 +17,13 @@ python-dateutil==2.7.3
 python-editor==1.0.3
 requests==2.27.1
 six==1.15.0
-SQLAlchemy==1.2.8
+SQLAlchemy==1.4.54
 urllib3==1.23
 Werkzeug==0.16.1
 boto3==1.9.169
 PyYAML==5.1.2
 Pillow==8.4
+pydiscourse==1.1.2
 
 # for serving
 gunicorn==20.1.0
@@ -44,4 +45,8 @@ s3transfer==0.2.1
 statsd==3.3.0
 uritemplate==4.1.1
 Werkzeug==0.16.1
-wrapt==1.14.1
+wrapt==1.14.1
+importlib-metadata==4.8.3
+greenlet==2.0.2
+typing-extensions==4.1.1
+zipp==3.6.0