replace github by gitlab in requirements.txt
replace github by gitlab in requirements.txt

lsaffre/lino_extjs6,lino-framework/extjs6,lino-framework/extjs6,lsaffre/lino_extjs6,lsaffre/lino_extjs6,lino-framework/extjs6,lsaffre/lino_extjs6,lsaffre/lino_extjs6