Make 'vines cert' command respect certs config setting.
Make 'vines cert' command respect certs config setting.

AliEn707/vines,Zauberstuhl/diaspora-vines,diaspora/vines,AliEn707/vines,Zauberstuhl/vines,negativecode/vines,artofhuman/vines,artofhuman/vines,artofhuman/vines,diaspora/vines,Zauberstuhl/diaspora-vines,AliEn707/vines,negativecode/vines,Zauberstuhl/vines