new bash remediation for file_permissions_grub2_cfg
Update shell prompts in shorthand2xccdf
Updated shorthand2xccdf to drop sudo from systemctl is-enabled

per https://github.com/OpenSCAP/scap-security-guide/pull/252#issuecomment-56951615
Merge pull request #252 from shawndwells/fileperms-desc-macro

updating command prompts in shorthand2xccdf.xslt, bash remediations