Fonts: Make max and min size confgurable

Feature Requests

Description

Currently the min and max size of fonts are fix values. Some projects might need these values to be configurable.

User Stories

As (role of the user) I need (what has to be done) in order to (what I want to achieve with this feature).

Classification

Is this feature an enhancement of existing code or a completely new feature?

• enhancement
• new feature

/cc Mathias Göbel, Frank Schneider, Michelle Weidling