Added basic installer script and source libraries for Ubuntu - Lubuntu.

	new file:   ubuntu-packages-installer
	new file:   ubuntu_libraries/code_and_text_editors.sh
	new file:   ubuntu_libraries/customization-packages-lubuntu.sh
	new file:   ubuntu_libraries/customization-packages-ubuntu-unity.sh
	new file:   ubuntu_libraries/disable-unity-online-search.sh
	new file:   ubuntu_libraries/distro-modding-and-live-usb.sh
	new file:   ubuntu_libraries/install_codecs.sh
	new file:   ubuntu_libraries/install_kernel-headers_and_infrastructure.sh
	new file:   ubuntu_libraries/internet-applications.sh
	new file:   ubuntu_libraries/media-tools.sh
	new file:   ubuntu_libraries/office-tools.sh
	new file:   ubuntu_libraries/sync_and_download_tools.sh
	new file:   ubuntu_libraries/system_tools.sh
	new file:   ubuntu_libraries/ubuntu_and_debian_package-management.sh
	new file:   ubuntu_libraries/user_xdg-settings.sh
	new file:   ubuntu_libraries/virtualization.sh