Add wrappers for the maintenance scripts to the setuptools
configuration.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Avoid using UNIX_TIMESTAMP which is not part of the SQL standard.

See f2a6bd20

 (git-interface: Do not use UNIX_TIMESTAMP, 2016-08-05) for
related changes.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Instead of using configparser and mysql.connector directly, change all
Python scripts to use the config and db Python modules which are now
accessible from a common location.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Move the main program logic of all scripts to main() methods such that
they can be used as modules and easily be invoked by setuptools wrapper
scripts.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

By using the setup-repo command, it is currently possible to create
empty package bases, which can be used to make package base
reservations. Add a maintenance script to remove such empty package
bases after 24 hours.

Fixes FS#46279.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Create a new field Popularity in the PackageBases table. The field is
updated by the popupdate script and reflects the popularity of a
package. Popularity is the sum of all votes with each vote being
weighted with a factor of 0.98 per day since its creation.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

This adds a simple script that can be used to recalculate the number of
votes per package. It can be used in a cronjob.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

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

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

This can be used to regularly generate lists of packages and package
bases that are made available under /packages.gz and /pkgbase.gz,
respectively.

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