Enhance torrent components, command palette, and global stylings

- Torrent Table gets more consistent background styling
- StorageSectionBrowser w/ different chevron icons for open/close
- Vim keyboard navigation for command palette
- Update main.scss with animations which don't stack & interfere
- Command pallet vim vertical navigation

src/components/ui/CommandPalette.vue

@@ -15,6 +15,8 @@
             @keydown.enter.prevent="navigateToSelected"
             @keydown.esc.prevent="close"
             @keydown="handleInputKeydown"
+            @keydown.ctrl.j.prevent="selectNext"
+            @keydown.ctrl.k.prevent="selectPrevious"
           />
           <input
             v-else