improvement(settings): Change layout to be more readable

[jakubiakdev]

This might be a matter of personal opinion, but when I downloaded this extension today, the settings page was very difficult to read. I hope by adding a divider between options, and separating checkboxes/selects the settings page will be more readable at a glance.

Feel free to suggest changes about this new layout

[WofWca]

Great stuff!

Before/after

Before:  After: 

Please see if you like the changes I pushed.

Since now the label and the input are further apart, I think we need to make the checkboxes more visible or something:

Also when dealing with 2-dimensional elements, I prefer flex over grid. Also adding flex-wrap may make sense for narrower screens.

Also I think we need to center the contents between dividers better.

But that can be done later.

[jakubiakdev]

LGTM

[WofWca]

Great! Thanks a lot!