Add 2.8 config and update, remove dependency on /var/db, add ability to only log to syslog if enabled

This is a fairly big rework which has been tested going through the build from source option on Ubuntu 14.04. I'm happy to setup smaller pull requests as well.  

Takeaways are:
 - version bump for all redis versions to default to 2.8
 - redis 2.8 config template file has been created 
    - the only option added that differed from the 2.6 template file was tcp_backlog so we could look at integrating the two and working off version number
 - removed the dependency on /var/db
    - I'm not sure where the design idea came from but /var/lib/redis for the data and /var/run/redis.pid seems to make more sense and in line with standards. 
 - added the ability to turn off logging to a file if you have enabled syslog.