Prometheus - Donation and payment store

Changelog

1. Fixed an issue where PayPal transactions would not work if a customer has a special character in their name.
2. Updated some language files to add language strings to the "store filter box"
3. Widget icon and some other icons can now have their colour changed in the theme editor again
4. Fixed raffle ticket purchases not registering
5. Fix purchasing of custom jobs (Yeah, I know, this one took far too long)
6. Fixed a bunch of PHP errors, including when installing Prometheus and logging in
7. Ran a PHP syntax fixer on literally every single file, I won't list them below
8. Some additional security fixes related to purchasing packages you weren't supposed to be able to purchase

Modified files

Web

1. inc/functions.php
2. ipn.php
3. ipnlistener.php
4. inc/login.php
5. lang/*
6. inc/classes/store.class.php
7. admin/theme.php
8. admin/pkg/php.php
9. inc/classes/options.class.php
10. inc/classes/verification.class.php
11. vendor/*