[lcc_members_portal] Renew membership process for organizations

[stephansainleger]

New formular available from company's user portal account only Generates a CRM lead which need to be manually validated or refused

Test scenario:

• create a portal account for a company partner which is not member
• connect with the new portal account
• in /my/home, click on "Renew subscription"
• fill the form and validate it
• connect on Odoo as admin and go in CRM addons
• a lead should has been created with the keyword [RENEWAL]
• check that the data in the lead match the ones entered in the form
• Try to validate the renewal => an error should appear
• fill the Membership product
• Try to validate : an invoice should be created, and the link must be displayed in the lead
• check the amount of the invoice