Do not show deletion link on the registration page

In 7df8dc8 (Add support for deleting user accounts, 2014-07-25), a link
to the account deletion page was added to the account edit form. Make
sure we only show this link if the user actually wants to edit an
account and do not show this link on the account registration page.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Fix the registration form

Pass the right parameters to display_account_form() and
process_account_form() when showing/processing the registration form.
Fixes a regression introduced in 03c6304 (Rework permission handling,
2014-07-15).

Reported-by: Karthik K <hashken.distro@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Suppress PHP notice in process_account_form()

Add a check to remove a notice which is displayed after registration
since commit 03c6304 (Rework permission handling, 2014-07-15).

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Update message catalog

Add some missing strings to aur.pot.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Release 3.4.1

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