Merge pull request #162 from GuillaumeGomez/master

New account module functionalities
Ticket -> new triggers
Survey -> new Triggers
Market -> new Triggers
Wallet -> new triggers
News -> new triggers
Mail -> new triggers
Notification -> new Triggers
remove MetadaReader implementation on modules wich previously use old trigger system
Account -> finalize port to new triggers
Faq -> new triggers
remove remaining implementation of MetadataReader
Correcting work loss from @GuillaumeGomez last PR.
Survey -> new Triggers
first work on widget for Ticket
Ticket -> new widget system
Wallet -> new widget system
FileUpload -> new widget system
fix fileupload widget
Merge pull request #2 from regnarock/triggers-new

Some additionnal work from #1 was made to properly restore Survey module.