ENYO-2446: Adding max-width 100% on header client
ENYO-2446: Adding max-width 100% on header client

Issue:
- When marquee text is used with 100% width inside of headerComponents,
  it is not have ellipsis when text is large enough.
- Marquee Text is having two times larger width than panel.

Fix:
- Add 100% max-width on moon-header-client. So that inner controls can
  not have larger width than panel.

Signed-off-by: Kunmyon Choi <3510e15fb820b511597698c69f7aab7153d9a537@lge.com>

enyojs/moonstone