RANGER-2520 : Prevent Roles to be saved in Ranger Role Management pag…

…e when user or groups are not added to the role.

(cherry picked from commit 716591d)

Ranger 1.2.0 release

Ranger 1.2.0 RC1

Ranger 1.1.0 Final Release

Ranger 1.1.0 RC1

Ranger 1.1.0 RC2

Ranger 1.0.0 release

Ranger 1.0.0-rc1 release

Ranger 1.0.0-rc0 release

Final 0.7.1 release