Added all CIS Section 8 Level 1 & 2 tasks & various fixes

https://benchmarks.cisecurity.org/tools2/ubuntu/CIS_Ubuntu_12.04_LTS_Server_Benchmark_v1.0.0.pdf
Also, seems strange that the doc says "Make sure each line that starts with `linux` has the `audit=1` parameter set." but there's nothing in Remediation about what to do if `audit=1` isn't set on a line that starts with `linux`.