FIX: show none/all on cat/tag drop only when needed

app/assets/javascripts/select-kit/components/category-drop.js.es6

@@ -50,13 +50,19 @@ export default ComboBoxComponent.extend({
   collectionHeader(allCategoriesUrl, allCategoriesLabel, noCategoriesUrl, noCategoriesLabel) {
     let shortcuts = "";
 
-    shortcuts += `
-      <a href="${allCategoriesUrl}" class="category-filter">
-        ${allCategoriesLabel}
-      </a>
-    `;
+    const currentRoute = Ember.getOwner(this)
+                              .lookup("controller:application")
+                              .get("currentRouteName");
 
-    if (this.get("subCategory")) {
+    if (currentRoute !== "discovery.parentCategory") {
+      shortcuts += `
+        <a href="${allCategoriesUrl}" class="category-filter">
+          ${allCategoriesLabel}
+        </a>
+      `;
+    }
+
+    if (this.get("subCategory") && currentRoute !== "discovery.categoryNone") {
       shortcuts += `
         <a href="${noCategoriesUrl}" class="category-filter">
           ${noCategoriesLabel}

app/assets/javascripts/select-kit/components/tag-drop.js.es6

@@ -77,14 +77,29 @@ export default ComboBoxComponent.extend({
 
   @computed("allTagsUrl", "allTagsLabel", "noTagsUrl", "noTagsLabel")
   collectionHeader(allTagsUrl, allTagsLabel, noTagsUrl, noTagsLabel) {
-    return `
-      <a href="${allTagsUrl}" class="tag-filter">
-        ${allTagsLabel}
-      </a>
-      <a href="${noTagsUrl}" class="tag-filter">
-        ${noTagsLabel}
-      </a>
-    `;
+    let content = "";
+
+    const currentRoute = Ember.getOwner(this)
+                              .lookup("controller:application")
+                              .get("currentRouteName");
+
+    if (this.get("tagId") !== "none") {
+      content += `
+        <a href="${noTagsUrl}" class="tag-filter">
+          ${noTagsLabel}
+        </a>
+      `;
+    }
+
+    if (currentRoute === "tags.showCategory") {
+      content += `
+        <a href="${allTagsUrl}" class="tag-filter">
+          ${allTagsLabel}
+        </a>
+      `;
+    }
+
+    return content;
   },
 
   @computed("tag")