TorButton should contain an opt-out option for the enforced max screen size in TB4.5+
TorButton 1.9.1.0 enforces the max screen size of Tor Browser 4.5a5 (#14429 (moved)) as an anti-fingetprint attack but some users do not care about that.
There should be an opt-out option in TorButton's security window, preferably a CheckBox.