Make deleted comments visible to Trusted Users

This allows Trusted Users to check whether a user posted a politically
incorrect comment, even if he already deleted it.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Clean up user references in user_delete()

Explicitly clean up all references before deleting a user.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Add support for deleting user accounts

Users can now delete their own accounts by clicking a link in the
account edit form and confirming the deletion on a follow-up page.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Do not allow regular users to edit all accounts

Fixes a regression introduced in 03c6304 (Rework permission handling,
2014-07-15).

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

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Auto-generate po/POTFILES

Reduce maintenance costs by auto-generating po/POTFILES in the Makefile.

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