added support for using apache2 cookbook's web_app with a ['pxe_dust']['dir'] attribute
update copyright dates
default attribute for overriding data bag settings
updated example
support overriding data bag settings with ['pxe_dust']['default'] attributes

The data bag code was actually greatly simplified by merging the defaults with
the node attributes, then merging this again with the image hash. All the '||'
everywhere were removed to make the code simpler. Regexes were used for matching
the Chef installers to the right versions, this was synced with the install.sh
and http://www.opscode.com/chef/install/ page for reference. A few foodcritic
and style cleanups went in as well.
initial Test-Kitchen testing
added pxe_dust::common
removed symlinks, these are separate releases now
ensure default isn't empty
Full Test-Kitchen coverage for pxe_dust (common, server, bootstrap_template and installers)

Tests for all recipes on Ubuntu 10.04, 12.04 and 13.04. Debian 7.1 will be added
once http://tickets.opscode.com/browse/BENTO-82 is fixed.
switch to :create
keyboard-configuration/xkb-keymap=us added to make Debian 7.1 happy
use LVM like the Ubuntu preseed
turns out the example passwords are 'ubuntu' not 'password'. Debian root is 'ubuntu', deal with it ;)
enable browsing http://NODE/
move the install.sh into the ['pxe_dust']['dir'] for easier location
Use of the local install.sh has been documented and the files moved into the doc_root which is now browseable.
fix the test to the new install.sh location
merge 1.5.0 branch
COOK-2914