Mozilla Firefox - about:config settings

This is a bunch of custom configurations for Mozilla Firefox. To change them go to about:config and edit each matching setting.

Disable the disturbing sound when searching and not finiding matching texts in pages - set to false:
accessibility.typeaheadfind.enable

DIsable the disturbing warning about non HTTPS connections on text fields - set to false:
security.insecure_field_warning.contextual.enabled

Disable content security policy which blocks userscripts and such on pages not accepting it - set to false:
security.csp.enable