Auth: Add page to change password.

Configure launcher as a default return to address.

Use standard X-Forwarded-User instead of custom X-User header.
Add X-Forwarded-UserId header holding user unique identificator.

Change-Id: Ib2e6329ba9fb91d2cc9a86b0c5fc78898769e3b8
diff --git a/core/auth/ui/templates/login.html b/core/auth/ui/templates/login.html
index a80ecc7..0d961b5 100644
--- a/core/auth/ui/templates/login.html
+++ b/core/auth/ui/templates/login.html
@@ -1,4 +1,4 @@
-{{ define "title" }}Sign in{{ end }}
+{{ define "title" }}dodo: sign in{{ end }}
 {{ define "main" }}
 <div>
 	<div class="logo">