Added Password variable, so a password could be easily used
Added World Seed, so that creating a world with a specific world seed would be possible
added NPCStream , to manage bandwidth usage
The tshock egg currently uses `unzip` command in the installation script to extract the downloaded files.
If the user reinstalls the server, the extracted files already exist, and `unzip` prompts for whether to overwrite the files or not. This causes the installation script to get stuck.
This fixes the problem by adding the `-o` option to overwrite the files without prompting.
