enable eol-last for eslint and ember-template-lint (#12678)

enable eol-last for eslint and ember-template-lint

Fixed a handlful of .hbs files where newlines weren't present

.eslintrc

@@ -1,7 +1,8 @@
 {
   "extends": "eslint-config-discourse",
   "rules": {
-    "discourse-ember/global-ember": 2
+    "discourse-ember/global-ember": 2,
+    "eol-last": 2
   },
   "globals": {
     "moduleFor": "off",

.template-lintrc.js

@@ -2,12 +2,10 @@ module.exports = {
   extends: "recommended",
   ignore: ["**/*.raw"],
 
-  // Pending:
-  // "eol-last": "always",
-
   rules: {
     "block-indentation": true,
     "deprecated-render-helper": true,
+    "eol-last": "always",
     "linebreak-style": true,
     "link-rel-noopener": "strict",
     "no-abstract-roles": true,