Show master features alongside features in roadmaps

Features are planned at various levels. Sometimes you need to show a mix of master features and features in a single timeline.

However since master features can have features in multiple releases, it is not possible to group features by release AND master feature without duplicating the master feature in each release.

This idea is to provide the ability to show bars for features and master features at the same time -- within the release they are specifically assigned to.

• Features would be shown alongside master features rather than grouped within them

• Master features would be shown only in the release they are specifically assigned to, even if they have features in other releases

• You should be able to choose which master features and features to include on the roadmap