Framework recommendation for web admin panels [on hold]

Most of the time I see myself making an admin panel for content management, alongside the Mobile or Web App whose content will be managed (like a e-shop or something else).

For this, I use PHP, HTML5 and JS. I’ve recently added a Babel transpiler to make things easier on the frontend, but if you look at the big picture, it isn’t such a huge leap in development speed.

I’d like to know if there’s something that’s much better, faster and easier to maintain, and less cumbersome (since there is quite a lot of JavaScript) for this kind of development, where there’s a lot of content population (the ‘getters’) and a lot of AJAX requests for saving or deleting. (the ‘setters’).