Set max title length to 255 chars

	modified:   main.html
Notes count under notes list

	modified:   css/main.css
	modified:   js/notes.js
	modified:   main.html
User must enter password to confirm account deleting

	modified:   js/main.js
	modified:   main.html
Download links on welcome page

	modified:   css/welcome.css
	modified:   welcome.html