Disable XText decoration on project icons
Include dependent features into product
Restrict more xtext plugins to 2.6.x
Include xtext redist feature into platform
Remove subversive as it needs to install a connector
Revert "Disable XText decoration on project icons" - it does not work

This reverts commit 06df5f8955cfe3c3c8917cb6415c1a6150a45039.