Improved filter dropdown for signals and lists

We've improved the filter drop down to make Signals and Lists more prominent, which allows for quicker navigation and exploration or these. Signals are a great way to start exploring your data to find suspicious patterns, such as VPN usage or credential stuffing, and with the improved filter drop down you'll get a much better overview of the available Signals. Similarly, with the improved Lists filter, you're quickly able to find historic data that matched a specific list