Custom CMS for Mobile Web Apps: JQuery Mobile, HTML5 & CSS3

Looking to create a custom, web-based CMS for mobile web apps. Allow clients to login from any browser, access their mobile web app's backend and manage content. Would prefer if CMS was built in responsive layout so it could be accessed nicely from clients mobile device. Clients are local small business owners, so need to have ability to create coupons, add social feeds, create QR codes, integrate PayPal/Google Checkout, etc. Also need to integrate analytics into the CMS dashboard - at the very least import Google Analytics. Mobile web apps will be published in JQuery Mobile, HTML5 and CSS3. Will need to score well on W3C Mobile Checker (preferably 85% +). I'm open to either MySQL or SQLite - tell me which you recommend and why, and I'll defer to your expertise. If you have a way to integrate a mobile shopping cart, you'll be considered first. Please send a PM here to ask for more details. Thank you for your time!