Move HTML files to root of app directory
Update image paths
Fix the first-time user experience
Merge branch 'master' into first-time
Merge branch 'master' into first-time

Conflicts:
	app/dashboard.html
	app/settings.html
Merge branch 'master' into first-time
Fix dashboard and settings under CSP.

With CSP header "default-src 'self'", Handlebars
template compilation fails because it requires Function.call,
which is forbidden by CSP.

To fix, we precompile templates into JS at build time, which
avoids the need for Function.call.
Merge branch 'master' into first-time