Fixes PHP notice in catalog list template and adapts case of PayPal parameter to match the case sent by PayPal server
Merge https://github.com/Arcavias/arcavias-core
Adapts test for changed token name
Merge pull request #193 from nsendetzky/master

 Fixes PHP notice in catalog list template and adapts case of PayPal parameter to match the case sent by PayPal server