Hide the "Add User" buttom from users without proper rights
Maintenance mode in strict environment VS undefined collection object
Merge pull request #1858 from glukasik/patch-1

Hide the "Add User" buttom from users without proper rights
Merge pull request #1860 from glukasik/patch-3

Maintenance mode in strict environment VS undefined collection object
Prevent avatar images from being permanently cached by the browser

The browser keeps serving the old image when it changed