Sync with Download Panel Tweaker: update margins/paddings
https://github.com/Infocatcher/Download_Panel_Tweaker/commit/1532b5c89e291c74e33f6ffb64f2a6cdf6472744
https://github.com/Infocatcher/Download_Panel_Tweaker/commit/e07d66bb26e2c3c74ac16a1cde75c0a7282fe20b
Sync with Download Panel Tweaker: add very compact style
https://github.com/Infocatcher/Download_Panel_Tweaker/commit/689762dda4dccd49398c2e5c361aebaa0d0dce08