update the PDF version of the Terms of Use

Update the PDF that is promoted from the Terms of Use at http://www.curriki.org/xwiki/bin/view/Main/TOS and that is downloadable at http://www.curriki.org/xwiki/bin/download/Main/TOS/Curriki+TOS+v.1.3+052307.pdf to reflect the following changes:

18-->13 under #1

2.5-->3.0 under #5

new para in #10 as follows: Curriki is concerned about the safety and privacy of all its users, particularly children. For this reason, children under the age of 13 will not be permitted to register on the Curriki Website. Please remember that the Curriki Website is designed to appeal to a broad audience. Accordingly, as the legal guardian, it is your responsibility to determine whether any of the content provided through the Curriki Website is appropriate for a minor. Minors who access the Service are assumed to have parental or guardian supervision or consent before accessing the Service. In addition, Curriki expects all members who contribute content to be legal adults for the purpose of upholding licenses applied to content contributed. If Curriki learns that content is being contributed by a party under the age of 18, and it is determined that the content this under-18 member contributed was not the original work of the minor, Curriki will take action to rectify the situation, ensuring that the rights and protections of all licenses are managed appropriately. This may require removing content from the site.