Implemented negative filters in back-end, added basic fixed filters settings dialog.

package.json

@@ -24,6 +24,7 @@
     "config": "^3.3.9",
     "connect-redis": "^7.1.1",
     "convert": "^4.14.1",
+    "cookie": "^0.6.0",
     "cron": "^3.1.6",
     "cross-env": "^7.0.3",
     "date-fns": "^3.0.0",
@@ -34,6 +35,7 @@
     "express-session": "^1.18.0",
     "floating-vue": "^5.2.2",
     "ip-cidr": "^4.0.0",
+    "js-cookie": "^3.0.5",
     "knex": "^3.1.0",
     "manticoresearch": "^4.0.0",
     "markdown-it": "^14.0.0",