Added ability to change number of full counters

[vabene1111]

This PR adds a setting that allows to choose how many large counters should be displayed.

• fixes #66
• Very useful for large devices
• This can later be expanded with an automatic screen detection to automatically keep up with ever growing screen sizes

I also changed the inputDialog on the settings page to be somewhat generic in case any other number based settings should be added in the future, this introduces some very small overhead but reduces code overall as i did not need to create a secondary dialog with lots of duplicate code