Code Secure User login system

Create a secure user login system for members to login to their page. Page contents could be added to, voted on, and shared with other friends. Have feature similar to Google docs, where friends may be invited to different classes. For each page, there are 3 friend (member) classes: 1. Can view 2. Can view and vote 3. Can view, vote, and add/remove content The original member can also designate which of the 3 classes can invite more people. I.e. only classes 2 and 3 can invite people. Otherwise, all members are the same, they can edit their account information, create new pages to invite friends (of which they’ll be the original member), and vote on pages they’ve been invited to. We are also considering the use of Braintree for payment processing. We do not expect to hold credit card information. Regardless, member and site security is of utmost importance. We are working with other developers as well, so the system should be able to be integrated securely and relatively easily throughout the rest of the site. Pages (design not needed, only functionality) Admin page - to add and delete members. Notifications on important changes. Member page - to view/edit account information Share page - member-created page that can be shared with friends Integrate member functions (like, share with other members) across site. Integrate easy member signup across site. More details to be provided (regarding membership information) when project is accepted.