Update permissions

Makes it work properly for non-root so that the Intro class will work
properly. Also correct operatingsystem support.
Merge pull request #350 from binford2k/fix/userprefs_perms

Update permissions
Write report stats to student's home directory

This script is run via sudo, so we need to get the name of the logged in
user to derive the path for the output file. Otherwise, it just logs to
root's homedir and that's not terribly useful.

Fixes #COURSES-554
Merge pull request #351 from binford2k/ticket/COURSES-554/write_report_stats_to_homedir

Write report stats to student's home directory
Allow students to tail /var/log/messages

This allows only no args or -f.

Fixes #COURSES-553
Merge pull request #352 from binford2k/ticket/COURSES-553/allow_students_to_run_tail

Allow students to tail /var/log/messages
Finally fixes the install of pltraining-classroom.

I've updated the version number.

Bumped the version of puppetlabs/ntp and removed our puppetlabs-stdlib dependency.