*removed dependancy to account_budget (replaced to account) and removed budget_id field (not used and not compliant with use of budgets)
*improved facility of inheritance
bzr revid: qdp@tinyerp.com-20081128130947-qd0gxnl3ofxbpa1e
*modified and improved the use of emails
*modified and improved the links between the event and the cases of the registration of it, in order to be able to use the power of the crm to make rules. Filled
desription, date_deadline
*improved help tooltips
*improved views (form views)
*small improvements
*new design of registration: there is now a link to a res.partner.contact in place that the previous one that were linked to an address
*new design of event.event: the product_id field is now mandatory
*better control and error management
*bugfixed the onchanges
bzr revid: qdp@tinyerp.com-20081007092612-ulp1nu77hkdz370h
*added a wizard that check whenever a registration is confirmed that there is enough available places and the warn the user if no, giving him the choice to continue or
cancell the registration's confirmation.
bzr revid: qdp@tinyerp.com-20081002133703-vu7l6lqld6xkj094