fix(ui): CSS fixes

Author: Guillaume Chau

packages/@vue/cli-ui/src/components/ListItemInfo.vue

@@ -70,6 +70,9 @@ export default {
   .description
     color $color-text-light
 
+    >>> :first-child
+      margin-right 4px
+
     >>> .vue-ui-icon
       svg
         fill @color

packages/@vue/cli-ui/src/components/ProjectNav.vue

@@ -156,7 +156,6 @@ export default {
         > .default-slot
           flex auto 1 1
           width 0
-          margin-left 6px
           ellipsis()
           padding 4px 0
 </style>

packages/@vue/cli-ui/src/components/ProjectNavButton.vue

@@ -11,7 +11,7 @@
       <VueGroupButton
         class="flat big"
         :class="{
-          'icon-button': $responsive.wide
+          'icon-button': !$responsive.wide
         }"
         :value="view.name"
         :icon-left="!imageIcon && view.icon"