test if virtual product delivery is activated before trying to get an instance
Removed shipping tax line in order invoice for virtual products'
Added translations
Updated module.xsd for the market place
added new hook in product combination list
updated module xsd
new schema validation for module.xml
Fixed check_auth smarty plugin when used directly from render method
added exception for Invalid Module
Added array of errors
Added tags to xsd
Updated module model. Added module version, supported versions of Thelia, category of module
Started install module process
new smarty plugin : flash message
changed xsd v2 for module : tags are optional
Improved module installation. module errors
Added ModuleValidatr Tests
small fixes
added missing templates for module management
Fixed UI