nix wirkliches
Created new and Empty Class DecryptedInputStream.
Regrouped command packages and classes
package rearangements.
added possibility to read config entrys
Added possibillity to deactivate Ping/Pong user messages.
updated TODOs
Multiple changes to the user data management (channel and nick names
etc.), extracting access to the channels and nicks to an extra class,
making IRCnet.java smaller and better readable.
updated userdata management in command classes (adding new nicks/chans
to the database).