XHTML should be eliminated from lib/ as much as possible. This pulls the XHTML
out of the display_account_info function that echoes the code, and moves it
to the new account_details.php template file.

Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>