May 2021 - Speed improvements, maintenance

This release contains lots of changes in the backend (described below), and a few improvements on the web interface:

• Hide the captures with error from the index (see hide_captures_with_error)
• Return resources as text instead of in a zip file
• Crop and blur screenshot if it is too big to be displayed as-is
• Redesign of the menus
• Fix rendering of image resources in the investigation popup

The backend changes are mainly improving the overall performance of Lookyloo, with a few new features:

• All the captures (web and API) are using the asynchronous capture script, and the priority of each capture is weighted depending on the origin and the user(see priority, the number of async capture process is configurable (see async_capture_processes)
• The index is cached in memory by the webserver, making the index view lot faster after first load
• Improve auto-trigger of 3rd party modules (configurable per module)
• Add optional integration of whois queries with uWhoisd
• Disable FLoC globally
• Many bug fixes in har2tree and the creation of the tree
• Fix and improve MISP export, support subsequent captures as extended events
• Update all dependencies