[IMP] im_chat, im_livechat : add reporting view, quit conversation, option dropdown menu, feedback for live support, better access rules and shortcode model.
[CLEAN] website_event: migrate models to the new API + some code cleaning.

Updated some code in website_event_track, inheritance with new API.

Controllers need a major cleaning, but, hey, they are too creepy.
[CLEAN] event_sale: lint / cleaned module, migrated event models to the new API.