add never_triggered (#4442)

* add never_triggered

Add never_triggered to the last-triggered secondary_info.
as it stands, the secondary_info line is empty when used on an automation or script that hasn't been triggered yet, while the user expects info on that line.

* add "never_triggered"

for automation and script, to use in secondary_info
add last_triggered on script, because it was missing

* delete spaces

* add 2 spaces

travis check

* travis check row 116

* add never_triggered

to entities, delete incorrect entries to automation and script

* Update src/translations/en.json

Co-Authored-By: Bram Kragten <mail@bramkragten.nl>

* Update src/panels/lovelace/components/hui-generic-entity-row.ts

Co-Authored-By: Bram Kragten <mail@bramkragten.nl>

* Update src/panels/lovelace/components/hui-generic-entity-row.ts

Co-Authored-By: Bram Kragten <mail@bramkragten.nl>

* Update en.json

* Update hui-generic-entity-row.ts

Co-authored-by: Bram Kragten <mail@bramkragten.nl>
Co-authored-by: Ian Richardson <iantrich@gmail.com>

src/panels/lovelace/components/hui-generic-entity-row.ts

@@ -108,14 +108,17 @@ class HuiGenericEntityRow extends LitElement {
                     .datetime=${stateObj.last_changed}
                   ></ha-relative-time>
                 `
-              : this.config.secondary_info === "last-triggered" &&
-                stateObj.attributes.last_triggered
-              ? html`
-                  <ha-relative-time
-                    .hass=${this.hass}
-                    .datetime=${stateObj.attributes.last_triggered}
-                  ></ha-relative-time>
-                `
+              : this.config.secondary_info === "last-triggered"
+              ? stateObj.attributes.last_triggered
+                ? html`
+                    <ha-relative-time
+                      .hass=${this.hass}
+                      .datetime=${stateObj.attributes.last_triggered}
+                    ></ha-relative-time>
+                  `
+                : this.hass.localize(
+                    "ui.panel.lovelace.cards.entities.never_triggered"
+                  )
               : ""}
           </div>
         </div>

src/translations/en.json

@@ -1597,6 +1597,9 @@
             "no_devices": "This page allows you to control your devices, however it looks like you have no devices set up yet. Head to the integrations page to get started.",
             "go_to_integrations_page": "Go to the integrations page."
           },
+          "entities": {
+            "never_triggered": "Never triggered"
+          },
           "shopping-list": {
             "checked_items": "Checked items",
             "clear_items": "Clear checked items",