* Zombies:

- Menu reorganization.
- Added a "Control center". It is now possible to ping hosts with
the zombie (so you can bypass firewall etc.). For the moment hosts
must have port 80 open to appear alive.
- Fixed some bad display logic with javascript code.
- Added "Delete" menu.
- Added "Reset" and "Add separator" menu to keylogger viewer.
- Very first steps for "Zombies" management (based on BeEF ideas).

* Other:

- Better safe mode handling.
- Better recursive idirectory deletion.
- Launcher code cleaning.
- Some README/INSTALL update.
- Now the use of the "launcher.html" file is required to open PRS
shell. All GET access will result on a "404 Not Found" HTTP
error. Just open this file with your Web browser and click the
"Launch" button.