* changed font sizes to better values
* rename gui_templates.h to FontHelper.h
* replace hardcoded values with constants
* make knob labels use small font
* code review from michael
* more consolidation
* Fix text problem in Vectorscope
Fix a problem with cutoff text in Vectorscope. During the constructor
call of `LedCheckBox` the method `LedCheckBox::onTextUpdated` is
triggered which sets a fixed size that fits the pixmap and the text.
After instantiating the two instances in `VecControlsDialog` the
constructor then set a minimum size which overrode the fixed size that
was previously set. This then led to text that was cutoff.
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Co-authored-by: Michael Gregorius <michael.gregorius.git@arcor.de>
