Added 'tunnel' dependency, removed OpenCV.

package.json

@@ -95,7 +95,6 @@
         "mime": "^2.4.4",
         "moment": "^2.24.0",
         "nanoid": "^2.1.11",
-        "opencv4nodejs": "^5.5.0",
         "opn": "^5.5.0",
         "pg": "^7.18.1",
         "postgraphile": "^4.5.5",
@@ -110,6 +109,7 @@
         "template-format": "^1.2.5",
         "tough-cookie": "^3.0.1",
         "tty-table": "^2.8.12",
+        "tunnel": "0.0.6",
         "url-pattern": "^1.0.3",
         "v-tooltip": "^2.0.3",
         "vue": "^2.6.11",