WebUI: Apply box-sizing reset

Box-sizing: border-box is now applied globally. A lot of tiny changes were made but they were necessary to correct resulting inconsistencies. Everything should be pretty much as it was with just some minor exceptions.

Looks like this PR also indirectly fixed #21414.

PR #21464.

src/webui/www/private/scripts/prop-trackers.js

@@ -139,7 +139,7 @@ window.qBittorrent.PropTrackers ??= (() => {
             }
         },
         offsets: {
-            x: -15,
+            x: 0,
             y: 2
         },
         onShow: function() {
@@ -177,7 +177,7 @@ window.qBittorrent.PropTrackers ??= (() => {
             paddingVertical: 0,
             paddingHorizontal: 0,
             width: 500,
-            height: 250,
+            height: 260,
             onCloseComplete: function() {
                 updateData();
             }