PLT-6474 Basic Elasticsearch System Console Page (#6825)

* PLT-6474: Basic System Console Elasticsearch Config.

* Fix review comments.

* More review fixes.

* Review comments.

webapp/i18n/en.json

@@ -235,6 +235,27 @@
   "admin.customization.support": "Legal and Support",
   "admin.database.title": "Database Settings",
   "admin.developer.title": "Developer Settings",
+  "admin.elasticsearch.title": "Elasticsearch Settings",
+  "admin.elasticsearch.noteDescription": "Changing properties in this section will require a server restart before taking effect.",
+  "admin.elasticsearch.enableIndexingTitle": "Enable Elasticsearch Indexing:",
+  "admin.elasticsearch.enableIndexingDescription": "When true, indexing of new posts occurs automatically. Search queries will use database search until \"Enable Elasticsearch for search queries\" is enabled. {documentationLink}",
+  "admin.elasticsearch.enableIndexingDescription.documentationLinkText": "Learn more about Elasticsearch in our documentation.",
+  "admin.elasticsearch.connectionUrlTitle": "Server Connection Address:",
+  "admin.elasticsearch.connectionUrlDescription": "The address of the Elasticsearch server. {documentationLink}",
+  "admin.elasticsearch.connectionUrlExample.documentationLinkText": "Please see documentation with server setup instructions.",
+  "admin.elasticsearch.usernameTitle": "Server Username:",
+  "admin.elasticsearch.usernameDescription": "(Optional) The username to authenticate to the Elasticsearch server.",
+  "admin.elasticsearch.passwordTitle": "Server Password:",
+  "admin.elasticsearch.passwordDescription": "(Optional) The password to authenticate to the Elasticsearch server.",
+  "admin.elasticsearch.sniffTitle": "Enable Cluster Sniffing:",
+  "admin.elasticsearch.sniffDescription": "When true, sniffing finds and connects to all data nodes in your cluster automatically.",
+  "admin.elasticsearch.enableSearchingTitle": "Enable Elasticsearch for search queries:",
+  "admin.elasticsearch.enableSearchingDescription": "Requires a successful connection to the Elasticsearch server. When true, Elasticsearch will be used for all search queries using the latest index. Search results may be incomplete until a bulk index of the existing post database is finished. When false, database search is used.",
+  "admin.elasticsearch.connectionUrlExample": "E.g.: \"https://elasticsearch.example.org:9200\"",
+  "admin.elasticsearch.usernameExample": "E.g.: \"elastic\"",
+  "admin.elasticsearch.password": "E.g.: \"yourpassword\"",
+  "admin.elasticsearch.testHelpText": "Tests if the Mattermost server can connect to the Elasticsearch server specified. Testing the connection does not save the configuration. See log file for more detailed error messages.",
+  "admin.elasticsearch.elasticsearch_test_button": "Test Connection",
   "admin.email.agreeHPNS": " I understand and accept the Mattermost Hosted Push Notification Service <a href=\"https://about.mattermost.com/hpns-terms/\" target='_blank'>Terms of Service</a> and <a href=\"https://about.mattermost.com/hpns-privacy/\" target='_blank'>Privacy Policy</a>.",
   "admin.email.allowEmailSignInDescription": "When true, Mattermost allows users to sign in using their email and password.",
   "admin.email.allowEmailSignInTitle": "Enable sign-in with email: ",