`mr create` doesn't create ... maybe it should

- as reported by Paul[1], `mr create` should check
  to see if dir and if not, confirm and try to create
  directory if it doesn't

[1] http://forum.world.st/tode-st-mr-create-any-trick-to-get-it-working-for-server-directories-td4762485.html
throw an error is GLASS is not pre-installed ... pass error if debugMode in client is not enabled ...