Replace /api/externalprofile/show.json with a MastoAPI equialent

`/api/v1/accounts/:id` supports remote nicknames since pleroma!1622

src/components/who_to_follow/who_to_follow.js

@@ -26,7 +26,7 @@ const WhoToFollow = {
         }
         this.users.push(user)
 
-        this.$store.state.api.backendInteractor.externalProfile(user.screen_name)
+        this.$store.state.api.backendInteractor.fetchUser({ id: user.screen_name })
           .then((externalUser) => {
             if (!externalUser.error) {
               this.$store.commit('addNewUsers', [externalUser])

src/components/who_to_follow_panel/who_to_follow_panel.js

@@ -13,7 +13,7 @@ function showWhoToFollow (panel, reply) {
     toFollow.img = img
     toFollow.name = name
 
-    panel.$store.state.api.backendInteractor.externalProfile(name)
+    panel.$store.state.api.backendInteractor.fetchUser({ id: name })
       .then((externalUser) => {
         if (!externalUser.error) {
           panel.$store.commit('addNewUsers', [externalUser])

src/services/api/api.service.js

@@ -4,7 +4,6 @@ import 'whatwg-fetch'
 import { RegistrationError, StatusCodeError } from '../errors/errors'
 
 /* eslint-env browser */
-const EXTERNAL_PROFILE_URL = '/api/externalprofile/show.json'
 const QVITTER_USER_NOTIFICATIONS_READ_URL = '/api/qvitter/statuses/notifications/read.json'
 const BLOCKS_IMPORT_URL = '/api/pleroma/blocks_import'
 const FOLLOW_IMPORT_URL = '/api/pleroma/follow_import'
@@ -220,14 +219,6 @@ const authHeaders = (accessToken) => {
   }
 }
 
-const externalProfile = ({ profileUrl, credentials }) => {
-  let url = `${EXTERNAL_PROFILE_URL}?profileurl=${profileUrl}`
-  return fetch(url, {
-    headers: authHeaders(credentials),
-    method: 'GET'
-  }).then((data) => data.json())
-}
-
 const followUser = ({ id, credentials }) => {
   let url = MASTODON_FOLLOW_URL(id)
   return fetch(url, {
@@ -966,7 +957,6 @@ const apiService = {
   updateBg,
   updateProfile,
   updateBanner,
-  externalProfile,
   importBlocks,
   importFollows,
   deleteAccount,

src/services/backend_interactor_service/backend_interactor_service.js

@@ -127,8 +127,6 @@ const backendInteractorService = credentials => {
   const updateBanner = ({ banner }) => apiService.updateBanner({ credentials, banner })
   const updateProfile = ({ params }) => apiService.updateProfile({ credentials, params })
 
-  const externalProfile = (profileUrl) => apiService.externalProfile({ profileUrl, credentials })
-
   const importBlocks = (file) => apiService.importBlocks({ file, credentials })
   const importFollows = (file) => apiService.importFollows({ file, credentials })
 
@@ -194,7 +192,6 @@ const backendInteractorService = credentials => {
     updateBg,
     updateBanner,
     updateProfile,
-    externalProfile,
     importBlocks,
     importFollows,
     deleteAccount,