Optimize the process of following someone (#9220)

* Eliminate extra accounts select query from FollowService

* Optimistically update follow state in web UI and hide loading bar

Fix #6205

* Asynchronize NotifyService in FollowService

And fix failing test

* Skip Webfinger resolve routine when called from FollowService if possible

If an account is ActivityPub, then webfinger re-resolving is not necessary
when called from FollowService. Improve options of ResolveAccountService

app/javascript/mastodon/actions/accounts.js

@@ -145,12 +145,14 @@ export function fetchAccountFail(id, error) {
 export function followAccount(id, reblogs = true) {
   return (dispatch, getState) => {
     const alreadyFollowing = getState().getIn(['relationships', id, 'following']);
-    dispatch(followAccountRequest(id));
+    const locked = getState().getIn(['accounts', id, 'locked'], false);
+
+    dispatch(followAccountRequest(id, locked));
 
     api(getState).post(`/api/v1/accounts/${id}/follow`, { reblogs }).then(response => {
       dispatch(followAccountSuccess(response.data, alreadyFollowing));
     }).catch(error => {
-      dispatch(followAccountFail(error));
+      dispatch(followAccountFail(error, locked));
     });
   };
 };
@@ -167,10 +169,12 @@ export function unfollowAccount(id) {
   };
 };
 
-export function followAccountRequest(id) {
+export function followAccountRequest(id, locked) {
   return {
     type: ACCOUNT_FOLLOW_REQUEST,
     id,
+    locked,
+    skipLoading: true,
   };
 };
 
@@ -179,13 +183,16 @@ export function followAccountSuccess(relationship, alreadyFollowing) {
     type: ACCOUNT_FOLLOW_SUCCESS,
     relationship,
     alreadyFollowing,
+    skipLoading: true,
   };
 };
 
-export function followAccountFail(error) {
+export function followAccountFail(error, locked) {
   return {
     type: ACCOUNT_FOLLOW_FAIL,
     error,
+    locked,
+    skipLoading: true,
   };
 };
 
@@ -193,6 +200,7 @@ export function unfollowAccountRequest(id) {
   return {
     type: ACCOUNT_UNFOLLOW_REQUEST,
     id,
+    skipLoading: true,
   };
 };
 
@@ -201,6 +209,7 @@ export function unfollowAccountSuccess(relationship, statuses) {
     type: ACCOUNT_UNFOLLOW_SUCCESS,
     relationship,
     statuses,
+    skipLoading: true,
   };
 };
 
@@ -208,6 +217,7 @@ export function unfollowAccountFail(error) {
   return {
     type: ACCOUNT_UNFOLLOW_FAIL,
     error,
+    skipLoading: true,
   };
 };