[FIX] website: prefer to get exact language
[FIX] website: prefer to get exact language

request.website.get_languages returns a list of tuple in the form:

        (`language code`, `language name`)

With this commit the code first check if there is a language exactly
matching, and only if failed check if there is a match on the short
form.

closes #11613
opw-672412

datenbetrieb/odoo,tvibliani/odoo,sysadminmatmoz/OCB,bplancher/odoo,shingonoide/odoo,bplancher/odoo,Elico-Corp/odoo_OCB,factorlibre/OCB,funkring/fdoo,hassoon3/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,Adel-Magebinary/odoo,ygol/odoo,makinacorpus/odoo,odootr/odoo,NeovaHealth/odoo,Daniel-CA/odoo,eino-makitalo/odoo,makinacorpus/odoo,grap/OpenUpgrade,jfpla/odoo,BT-ojossen/odoo,laslabs/odoo,mustafat/odoo-1,CatsAndDogsbvba/odoo,microcom/odoo,OpenUpgrade/OpenUpgrade,Nowheresly/odoo,odootr/odoo,eino-makitalo/odoo,provaleks/o8,BT-rmartin/odoo,sysadminmatmoz/OCB,grap/OpenUpgrade,ehirt/odoo,datenbetrieb/odoo,Nowheresly/odoo,mustafat/odoo-1,Daniel-CA/odoo,microcom/odoo,diagramsoftware/odoo,BT-ojossen/odoo,glovebx/odoo,factorlibre/OCB,NeovaHealth/odoo,ygol/odoo,leorochael/odoo,makinacorpus/odoo,eino-makitalo/odoo,Adel-Magebinary/odoo,laslabs/odoo,vnsofthe/odoo,spadae22/odoo,mustafat/odoo-1,dfang/odoo,jiangzhixiao/odoo,dfang/odoo,vnsofthe/odoo,jfpla/odoo,spadae22/odoo,odootr/odoo,laslabs/odoo,synconics/odoo,ygol/odoo,synconics/odoo,jfpla/odoo,laslabs/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,BT-rmartin/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,datenbetrieb/odoo,Noviat/odoo,shingonoide/odoo,eino-makitalo/odoo,ehirt/odoo,Endika/odoo,microcom/odoo,ygol/odoo,vnsofthe/odoo,eino-makitalo/odoo,NeovaHealth/odoo,dfang/odoo,datenbetrieb/odoo,synconics/odoo,Elico-Corp/odoo_OCB,shingonoide/odoo,synconics/odoo,Endika/OpenUpgrade,alexcuellar/odoo,glovebx/odoo,odootr/odoo,dfang/odoo,glovebx/odoo,Nowheresly/odoo,vnsofthe/odoo,Endika/odoo,ehirt/odoo,BT-rmartin/odoo,OpenUpgrade/OpenUpgrade,odootr/odoo,CatsAndDogsbvba/odoo,jiangzhixiao/odoo,NeovaHealth/odoo,jfpla/odoo,Adel-Magebinary/odoo,Endika/odoo,odootr/odoo,funkring/fdoo,diagramsoftware/odoo,eino-makitalo/odoo,alexcuellar/odoo,synconics/odoo,spadae22/odoo,jiangzhixiao/odoo,hassoon3/odoo,BT-ojossen/odoo,shingonoide/odoo,mustafat/odoo-1,OpenUpgrade/OpenUpgrade,Nowheresly/odoo,Adel-Magebinary/odoo,leorochael/odoo,mustafat/odoo-1,diagramsoftware/odoo,spadae22/odoo,alexcuellar/odoo,tvibliani/odoo,jfpla/odoo,Endika/odoo,storm-computers/odoo,microcom/odoo,microcom/odoo,ehirt/odoo,shingonoide/odoo,bplancher/odoo,Noviat/odoo,funkring/fdoo,CatsAndDogsbvba/odoo,Elico-Corp/odoo_OCB,CatsAndDogsbvba/odoo,Endika/OpenUpgrade,odootr/odoo,Endika/odoo,Noviat/odoo,hip-odoo/odoo,vnsofthe/odoo,datenbetrieb/odoo,storm-computers/odoo,Daniel-CA/odoo,tvibliani/odoo,alexcuellar/odoo,storm-computers/odoo,ygol/odoo,ehirt/odoo,jiangzhixiao/odoo,jfpla/odoo,diagramsoftware/odoo,Noviat/odoo,leorochael/odoo,alexcuellar/odoo,jiangzhixiao/odoo,spadae22/odoo,hassoon3/odoo,BT-ojossen/odoo,spadae22/odoo,BT-ojossen/odoo,jfpla/odoo,diagramsoftware/odoo,NeovaHealth/odoo,Noviat/odoo,Noviat/odoo,Endika/OpenUpgrade,Daniel-CA/odoo,BT-rmartin/odoo,diagramsoftware/odoo,dfang/odoo,provaleks/o8,glovebx/odoo,hassoon3/odoo,alexcuellar/odoo,datenbetrieb/odoo,storm-computers/odoo,diagramsoftware/odoo,BT-rmartin/odoo,jiangzhixiao/odoo,leorochael/odoo,glovebx/odoo,tvibliani/odoo,OpenUpgrade/OpenUpgrade,jiangzhixiao/odoo,mustafat/odoo-1,provaleks/o8,grap/OpenUpgrade,NeovaHealth/odoo,Noviat/odoo,laslabs/odoo,hassoon3/odoo,microcom/odoo,vnsofthe/odoo,grap/OpenUpgrade,BT-rmartin/odoo,tvibliani/odoo,provaleks/o8,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,Daniel-CA/odoo,laslabs/odoo,Adel-Magebinary/odoo,CatsAndDogsbvba/odoo,ehirt/odoo,grap/OpenUpgrade,sysadminmatmoz/OCB,mustafat/odoo-1,datenbetrieb/odoo,provaleks/o8,CatsAndDogsbvba/odoo,NeovaHealth/odoo,eino-makitalo/odoo,OpenUpgrade/OpenUpgrade,vnsofthe/odoo,ygol/odoo,Endika/OpenUpgrade,hip-odoo/odoo,synconics/odoo,glovebx/odoo,leorochael/odoo,hip-odoo/odoo,grap/OpenUpgrade,grap/OpenUpgrade,Endika/odoo,spadae22/odoo,OpenUpgrade/OpenUpgrade,Daniel-CA/odoo,factorlibre/OCB,bplancher/odoo,provaleks/o8,Endika/odoo,Daniel-CA/odoo,Endika/OpenUpgrade,factorlibre/OCB,bplancher/odoo,glovebx/odoo,leorochael/odoo,OpenUpgrade/OpenUpgrade,funkring/fdoo,funkring/fdoo,alexcuellar/odoo,makinacorpus/odoo,factorlibre/OCB,Adel-Magebinary/odoo,bplancher/odoo,Adel-Magebinary/odoo,factorlibre/OCB,dfang/odoo,BT-rmartin/odoo,leorochael/odoo,makinacorpus/odoo,Nowheresly/odoo,storm-computers/odoo,Nowheresly/odoo,BT-ojossen/odoo,shingonoide/odoo,Endika/OpenUpgrade,Endika/OpenUpgrade,hassoon3/odoo,BT-ojossen/odoo,tvibliani/odoo,factorlibre/OCB,makinacorpus/odoo,sysadminmatmoz/OCB,shingonoide/odoo,Nowheresly/odoo,hip-odoo/odoo,CatsAndDogsbvba/odoo,makinacorpus/odoo,funkring/fdoo,funkring/fdoo,tvibliani/odoo,storm-computers/odoo,ehirt/odoo,ygol/odoo,provaleks/o8,synconics/odoo