PHP Programming and Mobile Design Site Tweaks Needed

We have a custom site built in PHP and the code is about 10 years old and there are a few bugs that need fixed. We are looking for a total price to complete the whole list shown below. Most items are PHP related, some are design/UI related. Need someone who can do BOTH. - in our main-admin you cant get to any tools in "/admin_forms/" folder. probably jsut needs path changed - fix the checkout form path for our samples order form - fix paypal & paypal plus checkout gateway. May need some type of update, not sure - mobile version is showing our old template skin so may need to tweak the css for mobile version - mobile nav is missing site links in drop down - add Contact Us form to the contact page - on mobile view the logo looks really small and drops down a line below Cart link - parse out the "?" diamond shaped images on whole site. see FAQ page for example. Code is turning apostrophes into question marks - the nav bar along bottom of template above footer is showing in green (old template) needs to change to blue. needs to manually override the bg color I think - remove or hide the Coupon Code input box in Shopping Cart area - "Proceed to Checkout" font is light grey and doesn't stand out well. need darker grey Here is a link to the website you will be working on: [login to view URL]