Enable sorting for SysConfig Search to work correctly

[stefanhaerter]

In Kernel/Modules/AdminSystemConfiguration.pm, subaction AJAXSearch, there is a call to sort, but with no compare function, so the sorting is called on an array of hash refs, which apparently doesn't do anything observable.

otobo/Kernel/Modules/AdminSystemConfiguration.pm

Lines 108 to 109 in f8e9f73

	SETTING:
	for my $Setting ( sort @SettingList ) {

[stefanhaerter]

Closed with merging #3282.

Perhaps it makes sense to require block statements on sort, similarly to map and grep. Other occurrences on sort on Hashrefs may be found elsewhere.