Fix #2785: Allow changing API key; require password to view or change key.

app/views/api_keys/new.html.erb

@@ -1,19 +0,0 @@
-<div id="c-api-keys">
-  <div id="a-new">
-    <h1>New API Key</h1>
-
-    <p>You can generate a new API key to authenticate against <%= Danbooru.config.app_name %>.</p>
-
-    <%= error_messages_for :api_key %>
-
-    <%= simple_form_for(@api_key) do |f| %>
-      <%= submit_tag "Generate" %>
-    <% end %>
-  </div>
-</div>
-
-<%= render "users/secondary_links" %>
-
-<% content_for(:page_title) do %>
-  New API Key - <%= Danbooru.config.app_name %>
-<% end %>