Increasing size of dependency tree should be available

With larger dependency trees it is hard to see all the branches, what their names are etc, I know you can click on each one to see however it would be nice to have a scale up button to redraw the tree to make it larger.

This only affects a very small number of blueprints though so isn't very important,

    https://blueprints.beta.launchpad.net/launchpad/+spec/ui-1.0

Is an example. Maybe the solution is to make it stretch further down..

Thanks, Alex.