update library files

Changes to be committed:

	modified:   includes/base.lib
	modified:   includes/git.lib
add curl and colordiff to required programs

Changes to be committed:

	modified:   config.sh
double quote function arguments with spaces

Changes to be committed:

	modified:   scripts/server_ssh.sh
remove carriage return

Changes to be committed:

	modified:   scripts/nginx_config.sh