Use "<?=" instead of "<?" for printing.
Fixes a regression introduced in a9048bb (Dedupe translatable strings,
2015-11-25).
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>
After performing a package base action on a separate page, return to the
corresponding package base details page.
Partly fixes FS#46545.
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>