[REV] stock_landed_cost: revert 22380f09a31f8bf5e9b1d26add7342864284b253.
[FIX] hr_holidays: much better version of
69297dbf8164b8456dfcb7ae7f9835b90974b938
[IMP] website_forum: tag creation now done only on enter, allowing to add whitespaces in tag name. More consistent behavior with odoo.
[IMP] Event: Split Tickets
Attendees are created on SO confirm.
Attendees are directly created for FREE registrations and
Attendees are created and SO are linked to the paid tickets.
Improved code to make (5 attendees lines, 2 SO lines) when 3 vip tickets and 2 standard tickets are bought.

This commit fullfills the following Goals:

Goal 1 : When only website_event is installed, free registration should be possible from website.
Goal 2 : When only event and website_event are installed, badge report should be print for free registrations.
Goal 3 : When website_event_sale is installed, at that time on confirming the sale order, the subscription line are splited per attendees.
Goal 4 : Added code for attendees registrations through SO. Now from SO also the attendee's details for the event can be filled same as from website