Hello!
This scene is in "only render" mode. You can inactive it : press N button/ Display /turn off only render
Also if you face a problem with Rig:
1.Open User prefences (ctrl+alt+U)
2.File
3.Active Auto run python script
4.Close Blend file
5.Reopen it!
-Masoud Zamani, 2017
Hey this is really cute!