MINESTORE - Selfhosted Server Webstore v3.5.6

Updated dependencies for composer installation.

Updated API for GUI

Added some metrics for debugging to increase speed of finding bugs for the future update.

Updated some API's for PayPal and Stripe.

*Fixed bug with having the new payment page on stable version

Fixed bug with payment detail page.

1) Fixed bug with GoPay, now it works fine in production mode.
2) Fixed bug with expire command adding, while editing package.
3) Implemented new model of currency updater.
4) Added debuger for updater in beta.

1) Fixed bug with double increase of purchase value in statistic tab;
2) Fixed bug with referral system;
3) Added seperate server command execution for referral system;
4) Fixed bug with big size of download file for new customers;
5) Fixed bug with linking to the package on statistic tab;
6) Fixed some small bugs;
7) Fixed bug with item priority while editing package.