Fix host selection in different size host lists

[ss-rstocchi]

When going from a list of say 4 items and switching to a group that has only 2 items in it I noticed that the next group selection would be lost.

Current selection method:

Group 1
---
host1
host2
host3
-> host4

SWITCH TO GROUP 2

Group 2
---
host1
host2

Pull Request selection method:

Group 1
---
host1
host2
host3
-> host4

SWITCH TO GROUP 2

Group 2
---
-> host1
host2

'host1' in 'Group 2' is now selected when we switch to that group.