Padding for buttons and inputs

Created by: isychev

Buttons and input inherit the padding from the $input-btn-padding-x and $input-btn-padding-y. For $input-btn-padding-y is entirely true, for there is a problem with $input-btn-padding-x, y buttons, large side indent and have indented input is much less. Please add to $input-btn-padding-x and $input-btn-padding-y variables $input-padding-x and $input-padding-x. Let them be the default