Canvas library page, Fabric.js http://fabricjs.com/
Fidler sample http://jsfiddle.net/33MME/2/
deleting elements http://jsfiddle.net/beewayne/z0qn35Lo/
responsive canvas https://stackoverflow.com/questions/21931271/how-to-enable-responsive-design-for-fabric-js
get canvas from database https://stackoverflow.com/questions/38812000/fabric-js-loadfromjson-issue
NavBar options: https://bootsnipp.com/snippets/featured/responsive-navigation-menu
validation: http://1000hz.github.io/bootstrap-validator/
grid sample for menu http://jsfiddle.net/CVVE6/11/
NaBar Tabs for menu https://v4-alpha.getbootstrap.com/components/navs/
simpLESS compiler: http://1000hz.github.io/bootstrap-validator/