Excess padding in nav bar dropdown

[gabalafou]

      .dropdown-menu {
        z-index: $zindex-popover;
        border: 1px solid var(--pst-color-border);
        box-shadow: 0 0 0.3rem 0.1rem var(--pst-color-shadow);
        background-color: var(--pst-color-on-background);
        padding: 0.5rem 0;

IMO we don't need the top/bottom padding either, but feel free to ignore this suggestion if you disagree

        padding: 0;

Originally posted by @drammock in #1414 (comment)

[gabalafou]

If I understand correctly, this is what the before / after screenshots would look like (ignore the purple focus ring) after applying the change suggested here:

Before	After

[gabalafou]

I think I prefer the before screenshot because the padding looks more equal. In fact, I might even increase the vertical padding some.

[drammock]

no strong feeling now that I've seen them side by side. Feel free to close if you like.

[trallard]

+1 on keeping the padding after seeing the comparison - think it would also be useful for anyone using touch devices