fix config defaults, add note about how to default to social theme
fix config defaults, add note about how to default to social theme

Humbedooh/ponymail,jimjag/ponymail,quenda/ponymail,Humbedooh/ponymail,jimjag/ponymail,rbowen/ponymail,quenda/ponymail,jimjag/ponymail,Humbedooh/ponymail,jimjag/ponymail,rbowen/ponymail,quenda/ponymail,rbowen/ponymail