[IMP]crm,Sales_team: misc improvement
[FIX]sales_team: sparkline bar should be align to its relevant item, apply gruop base.group_no_one on 'code' field, used many2many_kanban widget to display team members in kanban box.
[FIX]Fixed the issue of Sales Team Kanban Stages have NO impact on the opportunities stages.
[ADD] added function field calls_count into crm.lead to count the number of calls, improve form view of lead and opportunity, added new subtype 'Opportunity created', and added help to message_bounce field.
[IMP]Remove create quotation button keep only 'convert to quotation' button, and fixed issue of comapign_id, medium_id, source_id not set in quotation when it create from Opportunity.