Added requirements for live-build 4.x.
Updated hooks to live-build 4.x.
Updated filenames to live-build 4.x style.
Merge branch 'dev' into lb4

* dev:
  Suppress first time xfce4 dialog
Use new jessie vagrantbox as base for build environment.
Depend on live-build 4.x.
Merged.
Use new naming style for hooks. (*.hook.chroot).
Ignore local Vagrant provision script.
Added support for local Vagrant customizations.
Merge branch 'master' into lb4-repo

* master:
  Updated repository host.
Show message when running local scripts.
Fixed syntax error.
Fixed init script: removed premature exit call.
Fixed typo.
Configuring APT.
Fixed reading Digabi version number.
Do not remove /etc/apt/apt.conf inside Vagrantbox.

New Vagrantbox (jessie) doesn't include proxy configuration in
/etc/apt/apt.conf, so we don't need to try remove that file.
Fixed shared folder name.
Fixed installation of buildbox packages: run as sudo.