* master: (45 commits)
  add firewalld component
  fixup! NEO: fix build of [slapos-deps-eggs]
  version up : mesa 11.0.3.
  version up eggs.
  python: Add patch to support pytracemalloc and add the corresponding egg to ERP5.
  NEO: do not rely on $HOME, which is not always equal to ${buildout:directory}
  NEO: fix build of [slapos-deps-eggs]
  component python-setuptools updated to version 18.4
  use lockfile egg version 0.10.2 for kvm and webrunner development
  monitor2: fix rss link
  monitor2: add minimal css for the default promise interface
  monitor2: add rss button
  version up: numpy 1.10.0.post2.
  monitor2: add rss feed
  version up : zc.buildout 1.7.1.post13 and zc.recipe.egg 1.3.2.post5.
  version up eggs.
  version up : FreeType 2.6.1.
  version up : pkg-config 0.29
  monitor2: fix status interface js error according to dom
  kvm: cdrom-iso update to version 8.2.0
  ...

By default, this is only true when a partition has a dedicated unix user.
Inside a webrunner, we can have:
  ${buildout:directory} = /srv/slapgrid/slappart0/srv/runner/instance/slappart1
  but $HOME = /srv/slapgrid/slappart0

Zope partitions override HOME as follows:
  home-path = ${buildout:directory}

The link was pointing to the RSS url itself instead of
pointing to the monitoring interface.

also add --disable-host-tool option to prevent possible installation
error that happens when pkg-config is rebuild without removing
parts/pkg-config directory.

Fixing almost random error: cannot get `parentNode` of null

More information available on the README file.

This reverts commit b3c5f181.