Merge pull request #7 from nsendetzky/master

Adds command line options to cron script and statistics output
Merge pull request #8 from nsendetzky/master

Fixes bug preventing other sites than "default"
Merge pull request #9 from nsendetzky/master

Adds session part to detail demo page
Merge pull request #10 from nsendetzky/master

Implements tests for payment related order e-mails
Merge https://github.com/Arcavias/arcavias-demo
Fixes wrong Github URL for updates
Updates to latest Arcavias core