Update build configuration for RAP 3.0 M4

- Update Eclipse Platform references
  - Eclipse Platform 4.5 M4 (Mars M4) for Mars contribution
  - Unmodified: Eclipse Platform 4.4.1 (Luna SR1) for RAP 3.0 release
- Force update of feature qualifiers

Change-Id: I7101b89fb7d0ccf4cfbf73bfc89947c05f954c1b
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>