only show the link when the plugin is enabled

assets/javascripts/discourse/templates/connectors/user-profile-primary/link.hbs

@@ -1,4 +1,5 @@
-
-<div class="discourse-donations">
-  <a href="/users/{{model.username}}/payments">Donate</a>
-</div>
+{{#if siteSettings.discourse_donations_enabled}}
+  <div class="discourse-donations">
+    <a href="/users/{{model.username}}/payments">Donate</a>
+  </div>
+{{/if}}

config/locales/server.en.yml

@@ -0,0 +1,3 @@
+en:
+  site_settings:
+    discourse_donations_enabled: "Enable the discourse donations plugin."

config/settings.yml

@@ -0,0 +1,4 @@
+plugins:
+  discourse_donations_enabled:
+    default: true
+    client: true

plugin.rb

@@ -9,6 +9,8 @@ gem 'stripe', '2.0.1'
 load File.expand_path('../lib/discourse_donations/engine.rb', __FILE__)
 load File.expand_path('../config/stripe.rb', __FILE__)
 
+enabled_site_setting :discourse_donations_enabled
+
 after_initialize do
   header_script = '<script src="https://js.stripe.com/v3/"></script>'