[FIX] im_livechat: various fixes
[FIX] im_livechat: various fixes

- use channel configuration for the auto_popup
- clear auto_popup timeout when chat open to prevent opening the chat twice
  if the user opens it himself before the end of the timeout
- don't send message when no feedback given

bplancher/odoo,optima-ict/odoo,optima-ict/odoo,sysadminmatmoz/OCB,bplancher/odoo,storm-computers/odoo,hip-odoo/odoo,stephen144/odoo,sysadminmatmoz/OCB,laslabs/odoo,dfang/odoo,laslabs/odoo,bplancher/odoo,microcom/odoo,hip-odoo/odoo,bplancher/odoo,microcom/odoo,stephen144/odoo,microcom/odoo,Elico-Corp/odoo_OCB,optima-ict/odoo,microcom/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,hip-odoo/odoo,laslabs/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,laslabs/odoo,ygol/odoo,hip-odoo/odoo,storm-computers/odoo,laslabs/odoo,ygol/odoo,Elico-Corp/odoo_OCB,dfang/odoo,hip-odoo/odoo,storm-computers/odoo,ygol/odoo,storm-computers/odoo,ygol/odoo,ygol/odoo,stephen144/odoo,dfang/odoo,microcom/odoo,stephen144/odoo,optima-ict/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,microcom/odoo,storm-computers/odoo,optima-ict/odoo,dfang/odoo,stephen144/odoo,bplancher/odoo,stephen144/odoo,ygol/odoo,Elico-Corp/odoo_OCB,bplancher/odoo,optima-ict/odoo,dfang/odoo,ygol/odoo,dfang/odoo,sysadminmatmoz/OCB