DEV: Enable and fix the 'no-duplicate-attributes' lint

.template-lintrc.js

@@ -16,7 +16,7 @@ module.exports = {
     "no-args-paths": true,
     "no-attrs-in-components": true,
     "no-debugger": true,
-    "no-duplicate-attributes": false,
+    "no-duplicate-attributes": true,
     "no-extra-mut-helper-argument": true,
     "no-html-comments": true,
     "no-index-component-invocation": true,

app/assets/javascripts/discourse/templates/composer.hbs

@@ -213,7 +213,7 @@
       {{else}}
         <div class='saving-text'>
           {{#if model.createdPost}}
-            {{i18n 'composer.saved'}} <a href class='permalink' href={{createdPost.url}} {{action "viewNewReply"}}>{{i18n 'composer.view_new_post'}}</a>
+            {{i18n 'composer.saved'}} <a class='permalink' href={{createdPost.url}} {{action "viewNewReply"}}>{{i18n 'composer.view_new_post'}}</a>
           {{else}}
             {{i18n 'composer.saving'}} {{loading-spinner size="small"}}
           {{/if}}

app/assets/javascripts/discourse/templates/topic.hbs

@@ -36,7 +36,6 @@
                 options=(hash
                   filterable=true
                   categoryId=buffered.category_id
-                  filterable=true
                 )
               }}
             {{/if}}