Fixes

New Domain Script
  - build_vhost_config()
    -- added check for is_rails
      --- echo DocumentRoot with '/public'
  - create_file_structure()
    -- added check for "if ! $ret"
      --- before running usermod -d ...
  - create_database()
    -- fixed $sql variable
      --- rm duplicate q2 var
      --- replaced w/ q3
    -- added echo for Database success