split modal's content into another component, add lazy loading

src/components/settings_modal/settings_modal.js

@@ -1,40 +1,11 @@
 import Modal from 'src/components/modal/modal.vue'
-import TabSwitcher from 'src/components/tab_switcher/tab_switcher.js'
-
-import DataImportExportTab from './tabs/data_import_export_tab.vue'
-import MutesAndBlocksTab from './tabs/mutes_and_blocks_tab.vue'
-import NotificationsTab from './tabs/notifications_tab.vue'
-import FilteringTab from './tabs/filtering_tab.vue'
-import SecurityTab from './tabs/security_tab/security_tab.vue'
-import ProfileTab from './tabs/profile_tab.vue'
-import GeneralTab from './tabs/general_tab.vue'
-import VersionTab from './tabs/version_tab.vue'
-import ThemeTab from './tabs/theme_tab/theme_tab.vue'
 
 const SettingsModal = {
   components: {
     Modal,
-    TabSwitcher,
-
-    DataImportExportTab,
-    MutesAndBlocksTab,
-    NotificationsTab,
-    FilteringTab,
-    SecurityTab,
-    ProfileTab,
-    GeneralTab,
-    VersionTab,
-    ThemeTab
-  },
-  data () {
-    return {
-      resettingForm: false
-    }
+    SettingsModalContent: () => import('./settings_modal_content.vue')
   },
   computed: {
-    isLoggedIn () {
-      return !!this.$store.state.users.currentUser
-    },
     modalActivated () {
       return this.$store.state.interface.settingsModalState !== 'hidden'
     },
@@ -42,8 +13,6 @@ const SettingsModal = {
       return this.$store.state.interface.settingsModalState === 'minimized'
     }
   },
-  watch: {
-  },
   methods: {
     closeModal () {
       this.$store.dispatch('closeSettingsModal')