Move mongodb settings to vines-mongodb gem.
Move mongodb settings to vines-mongodb gem.

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