Fixed shared folder name.
Fixed installation of buildbox packages: run as sudo.
Merge branch 'lb4'

* lb4:
  Do not add experimental suite.
  Install Iceweasel from jessie.
  Remove lxpolkit.
  Disable suite wheezy.
  Do not remove /etc/apt/apt.conf inside Vagrantbox.
  Fixed reading Digabi version number.
  Configuring APT.
  Fixed typo.
  Fixed init script: removed premature exit call.
  Fixed syntax error.
  Show message when running local scripts.
  Added support for local Vagrant customizations.
  Ignore local Vagrant provision script.
  Use new naming style for hooks. (*.hook.chroot).
  Depend on live-build 4.x.
  Use new jessie vagrantbox as base for build environment.
  Updated filenames to live-build 4.x style.
  Updated hooks to live-build 4.x.
  Added requirements for live-build 4.x.
Fixed previous merge.