[453701] Add support for Windows Phone 8 platform

Add platform filters and update pom files of wp plugins.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=453701
Change-Id: I08289bfd0ac7f477a9e1475f44d1c5560365ec31
Signed-off-by: wgalanciak <wojciech.galanciak@gmail.com>