Stop using error_log #52
Description
We currently only use error_log within notifications or throw errors as needed. We should eliminate error_log and take advantage of two pieces of logging:
- log2logstash from mu-plugins so the logs go to logstash
- logging to the query monitor, similar to remote-data-blocks
This way there'd be ample logging available for users and for us to debug issues in the plugin.
Note: nothing identifiable should be logged as privacy is our most important consideration here.