fix twitter

app/services/contact_details/twitter.rb

-class ContactDetails::Twitter < ContactDetails::Website
-  ROOT = 'twitter.com/'
+class ContactDetails::Twitter < ContactDetails::Base
+  URL = 'https://twitter.com'
+  DOMAIN = 'twitter.com'
 
+  
   protected
   
+  # arnaudlevy
+  # twitter.com/arnaudlevy
+  # https://twitter.com/arnaudlevy
+  # TODO vrais tests
+  def prepare_url
+    @url = @string
+    @url.remove! DOMAIN if @url.start_with? DOMAIN
+    @url.remove! URL if @url.start_with? URL
+    @url.delete_suffix! '/'
+    @url.delete_prefix! '/'
+    @url = "#{URL}/#{@string}"
+  end
+  
   def prepare_label
     super
-    @label.remove! ROOT
+    @label.remove! URL
   end
 end
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