Add Vagrant config

[Vagrant](http://vagrantup.com) is used to create a stable and reproducible virtual machine for build and test purposes.
We're using Ubuntu 14.04 LTS (Trusty).

Installed software:

| Package       | Version              |
|---------------|----------------------|
| dos2unix      | 6.0.4                |
| git           | 1.9.1                |
| git-flow      | 1.6.1 (AVH Edition)  |
| ghostscript   | 9.10                 |
| imagemagick   | 6.7.7-10             |
| maven         | 3.0.5                |
| mc            | 4.8.11               |
| openjdk-7-jdk | 1.7.0_91             |
| php5-cli      | 5.5.9                |
| screen        | 4.1.0                |

Usage:
```bash
vagrant box add ubuntu/trusty64
vagrant up
vagrant ssh
cd /vagrant
mvn clean install -DgsExec=$(which gs) -DcompareExec=$(which compare) | tee mvn.log
exit
vagrant halt
```

After you shut down the VM, the build artifacts will still be available in the repository directory.

Author: amedee

.gitignore

@@ -152,3 +152,5 @@ nbactions*.xml
 
 # Ignore generated files
 samples/src/test/resources/db/filmfestival.log
+
+.vagrant/

Vagrantfile

@@ -0,0 +1,28 @@
+$script = <<SCRIPT
+#!/usr/bin/env bash
+
+apt-get update
+apt-get -y install dos2unix git git-flow ghostscript imagemagick maven mc openjdk-7-jdk php5-cli screen
+
+git config --global color.ui true
+git config --global core.abbrev 10
+git config --global core.editor nano
+git config --global core.abbrev 10
+git config --global --bool pull.rebase true
+git config --global branch.autosetupmerge always
+git config --global branch.autosetuprebase always
+git config --global core.autocrlf input
+git config --global core.safecrlf false
+git config --global apply.whitespace nowarn
+git config --global push.default simple
+git config --global alias.ignore '!gi() { curl -L -s https://www.gitignore.io/api/$@ ;}; gi'
+SCRIPT
+
+Vagrant.configure(2) do |config|
+  config.vm.box = "ubuntu/trusty64"
+  config.vm.provision :shell, inline: $script
+  config.ssh.shell = "bash -c 'BASH_ENV=/etc/profile exec bash'"
+  config.vm.provider :virtualbox do |vb|
+    vb.customize ["modifyvm", :id, "--memory", "2048"]
+  end
+end