Upgrade to mongoose 7 (#14971)

* remove some unused dependencies

* update mongoose version

* make common tests pass

* Make unit tests pass

* make api v3 integration tests pass

* fix lint issues

* fix issue with package-lock

* fix(lint): we don't need no .js

* fix(lint): update to latest config-habitrpg

* chore(npm): update package locks

* fix(test): replace deprecated fn

* chore(package): update eslint-habitrpg again

* fix(lint): server linting

* fix(lint): client linting

* fix(client): correct mangled common imports

* chore(npm): update package-locks

* fix(lint): punctuation, module

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Co-authored-by: SabreCat <sabrecat@gmail.com>
Co-authored-by: SabreCat <sabe@habitica.com>

website/server/libs/apiError.js

@@ -8,7 +8,7 @@ import common from '../../common';
 const commonErrors = common.errorMessages.common;
 const apiErrors = common.errorMessages.api;
 
-export default function (msgKey, vars = {}) {
+export default function apiError (msgKey, vars = {}) {
   let message = apiErrors[msgKey];
   if (!message) message = commonErrors[msgKey];
   if (!message) throw new Error(`Error processing the API message "${msgKey}".`);