Make dashboards added to the left rail specific to object, template, global (user selection)

[#1]

Description -

When a dashboard is added to an object (left nav) make it so I can choose whether it's global (all objects of the same type) or local (only this object). If I add it to a template only projects created from the template show the dashboard.

Why is this feature important to you -

Similar to the issue with global filter/view/grouping settings a dashboard may be for a very specific case - or for a certain type of project. 

E.g. I'd like to add a special dashboard to my configuration project; another one to all request queue projects; every project created with the "creative execution template" need the exec dashboard etc. 

How would you like the feature to work -

When a dashboard is added to an object (left nav) make it so I can choose whether it's global (all objects of the same type) or local (only this object). If I add it to a template only projects created from the template show the dashboard.

Current Behaviour -

If you add dashboard X (eg project summary) to a project, it displays on ALL project regardless whether it applies or not.

In the above example all projects would show 

-  configuration dashboard

-  queue dashboard

-  exec dashboard