Remove ruby 1.8 in favor of 1.9.1 (aka 1.9.3)

Also, moved a couple packages into the system tools task.
Added build-essential

    ERROR:  Error installing antsy:
    ERROR: Failed to build gem native extension.

    /usr/bin/ruby1.9.1 extconf.rb
    creating Makefile

    make
    sh: 1: make: not found
Merge pull request #122 from blueboxgroup/blueboxgroup/ruby-1-9-3-bump

Remove ruby 1.8 in favor of 1.9.1 (aka 1.9.3)