add follow/unfollow to followed tags list

src/components/user_profile/user_profile.js

@@ -52,6 +52,7 @@ const UserProfile = {
       error: false,
       userId: null,
       tab: 'statuses',
+      followsTab: 'users',
       footerRef: null,
       note: null,
       noteLoading: false
@@ -176,6 +177,9 @@ const UserProfile = {
       this.tab = tab
       this.$router.replace({ hash: `#${tab}` })
     },
+    onFollowsTabSwitch (tab) {
+      this.followsTab = tab
+    },
     linkClicked ({ target }) {
       if (target.tagName === 'SPAN') {
         target = target.parentNode