PHP Function changes and Facebook login

1. CHANGE FUNCTION; 1a) - Freelancer quotes $250 - User has to pay % deposit of the amount to site admin - the rest is to be handled between freelancer and user - not on website. - Before user pays deposit, display a POP-UP showing the Deposit amount, the remaining amount, and the TOTAL amount (will show you in image) and make user agree to Terms and conditions by ticking box. A big button to confirm. - Both USER and FREELANCER get an email confirming the project details - this should also be saved on their profile under 'My Bookings'. - Confirm that you have read the whole project by stating your favourite breakfast and city at the beginning of your proposal. 1b) - when posting a project, the option 'Sealed' ; the admin should be able to turn it on by default or let the user choose. - Add some fields to project posting page and change some fields displayed once project is posted. - Remove few fields from profile page. 2. FIX a. Our site has an email function which was working fine before, but now it doesn't work anymore. b. In admin there is already an option to change % deposit but it only allows upto 9.99% - change so we can put higher than 9.99%. c. Add few buttons, and enlarge bidding prices in blue. d. Allow to display video on homepage slider. 3. FACEBOOK LOGIN - When users register using Facebook it should also take their Facebook profile picture and use it as the profile picture on our website. - Must agree to Terms & Conditions before being able to register (this function is already on the website for normal registration). 4. VENUE ADDRESS + MESSAGING - Venue Address should only be visible to the Freelancer after User has paid deposit, and project is confirmed. - Should become visible in the 'My Bookings' sections to the Freelancer - Should also be included in the confirmation email. - Messaging between Freelancer and Employer only allowed AFTER deposit payment has been made by Employer to the Admin. - Forbid the use of Email addresses, website addresses or numbers within messages. IMPORTANT: Only apply if you're will be available for future updates and projects, as we are looking a long-term relationship only.i