[FIX] sap.m.ObjectHeader: Prevent default on space key handling is always executed

Because of this, spaces cannot be used inside input controls which
are part of the object header.

Change-Id: If2e3efaa0331e542bd2f5f85b65f597d1f016c31
CR-Id: 012003146900009300102014
BCP: 1482006958
[INTERNAL][FIX] sap.m.ObjectHeader: Bottom border strech to full width

- Bottom border strech to full width

Change-Id: Ibd3dd3e746d59257dcde988b627325f31fdc0c10
CR-Id: 012003146900009003282014
(cherry picked from commit f09c74cd7647a7c14252c69617710d20a9cc03e0)