Fixed the issue Possible to crate duplicate label/group.

When regist or change the group name, trim the group name.
When checking the group name duplicate, trim group name.
->These behavior is the same as Google Contacts.
Fixed the group name duplication check at orientation change.

Affected area:
Group registration processing

Bug: 66981572
Change-Id: Iae7079964197f7e8d27f51f6d80bc3b262576305