feat: check for updates

server/graph/resolvers/group.js

@@ -75,7 +75,7 @@ module.exports = {
     },
     async update(obj, args) {
       if(_.some(args.pageRules, pr => {
-        return pr.match !== 'REGEX' || safeRegex(pr.path)
+        return pr.match === 'REGEX' && !safeRegex(pr.path)
       })) {
         throw new gql.GraphQLError('Some Page Rules contains unsafe or exponential time regex.')
       }

server/graph/resolvers/system.js

@@ -5,6 +5,7 @@ const os = require('os')
 const filesize = require('filesize')
 const path = require('path')
 const fs = require('fs-extra')
+const moment = require('moment')
 
 /* global WIKI */
 
@@ -62,10 +63,10 @@ module.exports = {
       }
     },
     latestVersion() {
-      return '2.0.0' // TODO
+      return WIKI.system.updates.version
     },
     latestVersionReleaseDate() {
-      return new Date() // TODO
+      return moment.utc(WIKI.system.updates.releaseDate)
     },
     async operatingSystem() {
       let osLabel = `${os.type()} (${os.platform()}) ${os.release()} ${os.arch()}`