No notification are sent because API requests are made with an empty user parameter

[drbrain]

In send the plugin fills in some params including the user value from the plugin configuration box

Then the plugin overwrites the user with the msgUser option if it is not None

If you do not fill in the "User:" field the value that the plugin checks is not None, it appears to be an empty string ("").

For the above dialog, the request body contains:

request: sound=pushover&title=test&url=&priority=0&token=MY_TOKEN&user=&device=&message=test&url_title=

This results in the following response:

$ curl -XPOST -d 'sound=pushover&title=test&url=&priority=0&token=MY_TOKEN&user=&device=&message=test&url_title=' https://api.pushover.net/1/messages
{"user":"invalid","errors":["user identifier is not a valid user, group, or subscribed user key"],"status":0,"request":"d961e780-b6fa-4d6f-bcde-63df63437c96"}

I won't have time to create a proper pull request for a while, but changing the condition on L54 of plugin.py to != "" sends messages with my user token using the above notification.

[drbrain]

This occurs with both the latest release, 1.2.0 and master.