Updated Flask to the latest 2.0.x version. Removed the depracation for using...

Updated Flask to the latest 2.0.x version. Removed the depracation for using an external user agent parser to get the browser kind.

wdfn-server/waterdata/views.py

@@ -301,7 +301,7 @@ def networks(network_cd):
 
     return render_template(
         'networks.html',
-        browser=user_agent_parser.Parse(request.user_agent.string)['os']['family'],
+        browser=user_agent_parser.Parse(request.user_agent.string)['user_agent']['family'],
         http_code=http_code,
         network_cd=network_cd,
         collection=collection,