New system plugin

I have just finished the new system structure. Now languages, auto-update, and lot's of other functionalities are available.

You can see a small documentation here :
https://github.com/tobiasBora/Palaver/blob/master/Doc/Plugins/New_Plugin_Version.org

I think these changes must be done if you want to be able to package it for Linux if you don't want to have privileges problems with plugins.

Now all plugins are in ~/.palaver.d/Plugins and install_directory/Plugins.

I didn't see any bug but if you do please tell me.

Please tell me if you don't like this system, I don't want to force anyone to use it but I think the current version is too hard to maintain and now it's nearly impossible to had functionnalities,and package it for Linux distribution, that's why I made this system based on Jame's sdk proposition.