webos-image: luna-applauncher=2,v4.0.0

:Release Notes:
Fix version, currently used submissions/1.00 tag is after commit
"Release luna-applauncher 4.0.0 to the public".
Tags "versions/4.0.0" and "submissions/2" were created to match
with webos_enhanced_submissions convention for tags.

:Detailed Notes:
00d1847 Assign Copyright to LG Electronics, Inc.
90d6853 Add build instructions

:Testing Performed:
Only build tested.

:QA Notes:
No change in functionality, only Copyright and README were updated.

:Issues Addressed:
[GF-5328]  Improve build performance and allow to build completely
           from PREMIRROR
[GF-12492] Convert PREFERRED_VERSION to WEBOS_VERSION and modify
           webos_enhanced_submissions.bbclass

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I08166bd9de558f9d5bcdf8bf76bd0b90c6fbfb3d
Reviewed-on: https://g2g.palm.com/3058
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>