Use bower when building debian package.

From::
Running "uglify:generated" (uglify) task
File tmp/loader.js created: 0 B → 0 B
File tmp/scripts.js created: 325.38 kB → 232.55 kB
To::
Running "uglify:generated" (uglify) task
File tmp/loader.js created: 3.32 kB → 3.19 kB
File tmp/scripts.js created: 2.22 MB → 800.16 kB
Remove iptables hack from globaleaks.sh.

It is working anyway.
Calling things by their proper name.

* Rename packer template to ubuntu 14.04, its output directory and vm name to a
  more meaningful one;
* Shink template using only one section "scripts".
Remove appliance script to install lts kernel from backports.