add user setting for carbons
add user setting for carbons

svbergerem/jsxc,jsxc/jsxc,pravi/jsxc,pravi/jsxc,jsxc/jsxc,jsxc/jsxc,diaspora/jsxc,Zauberstuhl/jsxc,diaspora/jsxc,pravi/jsxc,diaspora/jsxc,svbergerem/jsxc,svbergerem/jsxc,Zauberstuhl/jsxc,Zauberstuhl/jsxc