Redesign idea (#343)

* Redisign idea

* Code cleanup

* Fixed to right container

* Reoredered layout

* Reordering panels

* Export dialog

* Removed redunant code

* Fixed not removing temp canvas

* Fixed preview not using only selected elements

* Returned file name on export

* Toggle export selected/all elements

* Hide copy to clipboard button if no support of clipboard

* Added border to swatches

* Fixed modal flickering

src/components/Island.css

@@ -0,0 +1,7 @@
+.Island {
+  --padding: 0;
+  background-color: var(--bg-color-main);
+  box-shadow: var(--shadow-island);
+  border-radius: var(--border-radius-m);
+  padding: calc(var(--padding) * var(--space-factor));
+}