Feature: Have an exclusion list of site/URL title lookups

Certain terms and sites should not trigger a check and retrieval for the title. For example:

* asp.net (when mentioning the technology)
* Pretzel Rocks music (`https://prtzl.to/...`)

These values should be stored as part of the configuration or in a database. Handling wildcards and patterns, such as regular expressions and globbing would make this easily usable.