unify usage

app/views/app_passwords/show.html.erb

@@ -15,10 +15,10 @@
 <% else %>
 
   <p>
-  <%= t :app_passwords_help %>
+  <%= t(:app_passwords_help) %>
   </p>
 
-  <% if @passwords && !@passwords.empty? %>
+  <% if @passwords.present? %>
 
     <br />
     <hr />
@@ -34,7 +34,7 @@
             <%- end %>)
 
             <%= hidden_field_tag(:delete, '', value: pw) %>
-            &nbsp;<%= submit_tag(t :delete) %>
+            &nbsp;<%= submit_tag t(:delete)) %>
           <% end %>
         </li>
     <% end %>
@@ -45,22 +45,22 @@
   <br />
 
   <p>
-  <b><%= t :new_app_passwords %>:</b>
+  <b><%= t(:new_app_passwords) %>:</b>
   </p>
   <%= form_tag(app_passwords_path, method: "post") do %>
     <table>
       <tr><td>
-        <%= label_tag(:app_name, (t :app_name)) %>
+        <%= label_tag(:app_name, t(:app_name)) %>
       </td><td>
         <%= text_field_tag(:app_name, '', value: t(:app_name), autocomplete: 'off') %>
       </td></tr><tr><td>
-        <%= label_tag(:password, (t :your_main_pw)) %>
+        <%= label_tag(:password, t(:your_main_pw)) %>
       </td><td>
         <%= password_field_tag(:password, nil, placeholder: t(:enter_your_current_pw)) %>
       </td></tr>
     </table>
     <p>
-    <%= submit_tag(t :generate) %>
+    <%= submit_tag t(:generate) %>
     <%= link_to t(:back), root_path %>
     </p>
   <% end %>