add loading text for form submit buttons

app/views/devise/passwords/edit.html.erb

@@ -19,7 +19,7 @@
       </div>
     </div>
     <div class="form-control">
-      <%= f.submit 'Change my password', class: 'base-button' %>
+      <%= f.button button_title(title: 'Change my password', disabled_with: 'Changing password'), class: 'base-button' %>
     </div>
     <%= render 'devise/shared/links' %>
   <% end %>

app/views/devise/passwords/new.html.erb

@@ -9,7 +9,7 @@
       </div>
     </div>
     <div class="form-control">
-      <%= f.submit 'Reset password', class: 'base-button' %>
+      <%= f.button button_title(title: 'Reset password', disabled_with: 'Resetting password'), class: 'base-button' %>
     </div>
   <% end %>
   <%= render 'devise/shared/links' %>

app/views/devise/registrations/new.html.erb

@@ -31,7 +31,7 @@
       <% end %>
     </div>
     <div class="form-control">
-      <%= f.submit 'Sign up', class: 'base-button' %>
+      <%= f.button button_title(title: 'Sign up', disabled_with: 'Signing up'), class: 'base-button' %>
     </div>
   <% end %>
   <%= render 'devise/shared/links' %>

app/views/devise/sessions/new.html.erb

@@ -20,7 +20,7 @@
       <% end %>
     </div>
     <div class="form-control">
-      <%= f.submit 'Log in', class: 'base-button' %>
+      <%= f.button button_title(title: 'Log In', disabled_with: 'Logging In'), class: 'base-button' %>
     </div>
   <% end %>
   <%= render 'devise/shared/links' %>