Add test-browser to Make
Add test-browser to Make

This allows you to run selenium acceptance tests with `make test-browser`

filhocf/kanboard,BlueTeck/kanboard,lianguan/kanboard,kanboard/kanboard,BlueTeck/kanboard,stinnux/kanboard,fguillot/kanboard,djpadz/kanboard,libin/kanboard,kanboard/kanboard,kasunf/KanboardBOI,jtourt/kanboard,libin/kanboard,patoi/kanboard,xavividal/kanboard,Nerdingher/kanboard,lianguan/kanboard,xavividal/kanboard,thylo/kanboard,patoi/kanboard,stinnux/kanboard,kanboard/kanboard,vaikan/kanboard,patoi/kanboard,cdgeelen/kanboard,xavividal/kanboard,vaikan/kanboard,jtourt/kanboard,fguillot/kanboard,renothing/kanboard,oliviermaridat/kanboard,Busfreak/kanboard,Busfreak/kanboard,oliviermaridat/kanboard,Nerdingher/kanboard,BlueTeck/kanboard,vaikan/kanboard,kasunf/KanboardBOI,fguillot/kanboard,jtourt/kanboard,cdgeelen/kanboard,filhocf/kanboard,thylo/kanboard,renothing/kanboard,kasunf/KanboardBOI,djpadz/kanboard,renothing/kanboard,filhocf/kanboard,cdgeelen/kanboard,djpadz/kanboard,lianguan/kanboard,Busfreak/kanboard,thylo/kanboard,oliviermaridat/kanboard,Shaxine/kanboard,Shaxine/kanboard,Shaxine/kanboard,Nerdingher/kanboard,stinnux/kanboard