Bumped version to 5.1.1
Fix for sql error on payment method installation.
Merge branch 'hotfix/5.1.1'
Fixed typo in tested/supported osC version in readme.
removed unneeded orders_status addition, added error handling for svea_orders table and extracted it as method common to invoice, partpay
bumped version to 5.1.2
Merge branch 'hotfix/5.1.2'
json info about module added to master
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/includes/modules/payment/sveawebpay_invoice.php
	src/includes/modules/payment/sveawebpay_partpay.php