Role Paging In Users Not Working Properly

[LeoNerdoG]

If user adds more than 100 roles to a user (e.g. 101 roles) and then deletes all the roles on page 2 (one role in this case), Kapua does not properly refresh role list.
Even pressing Refresh button does not help.
If user wants to add a role that already exists, Kapua returns an error (which is OK, but user does not see exactly why, as roles are not displayed at all - screnshot No. 2)

Testflow:

1. Login as kapua-sys or any other user that has proper permissions
2. Go to Roles, create 101 roles
3. Go to Users, create a user (e.g. user0), go to its Roles tab
4. Add previously added roles
5. Delete the role on page 2 and observe how roles on page 1 are not displayed properly.

Expected behavior
After all the roles are deleted on page 2, roles on page 1 should be displayed.

Screenshot No. 1:

Screenshot No. 2:

Version of Kapua
1.1.0-SNAPSHOT

Type of deployment
[ ] Local Vagrant deployment
[x] Docker
[ ] Openshift (in its variants)
[ ] Others

Main component affected
[x] Console (in case of console please report info on which browser you encountered the problem)
[ ] REST API
[ ] Message Broker
[ ] - Others

Browsers used:

• Google Chrome (Version 69.0.3497.100 (Official Build) (64-bit))
• Safari (Version 12.0 (13604.3.5))
• Mozilla Firefox (63.0 (64-bit))
• Opera (Version 55.0.2994.44)

[LeoNerdoG]

I have verified that this issue has been resolved.