Use Python Wheels to install epu
Fix extra dependencies installation

It appears that with wheels, extra dependencies are not installed if the
main package is already installed.
Use libevent1 on Ubuntu, otherwise libevent2 is used

Conflicts:
	epu/recipes/default.rb
Update pip and setuptools before using wheels
Use Python Wheels to install Phantom
Use Python Wheels to install PhantomWebApp
Upgrade setuptools before installing PhantomWebApp
Update pip and setuptools before using wheels
Fix wrong copy/paste