Changed Spacing between between Buttons and Spacing of Settings Menu

[DrSommer20]

Description

Closes #1860 Changed padding for Modal-header, body and footer. Tested other forms to check, looks fine.

Added Range-slider padding. Only form where it is used is the Settings menu. Looks better

Closes #1859 Moved br into div to not interfere with href of supported Formats

Closes #1858 Removed unnecassary br from Image-to-pdf

Checklist

• [x] I have read the Contribution Guidelines
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [x] I have read the section Add New Translation Tags (for new translation tags only)

[Frooodle]

Can you share screenshot of settings menu?

[DrSommer20]

Yeah no Problem.