some minor fixes and warnings cleanpu

src/components/settings_modal/helpers/integer_setting.vue

@@ -1,7 +1,7 @@
 <template>
   <NumberSetting
     v-bind="$attrs"
-    truncate="1"
+    :truncate="1"
   >
     <slot />
   </NumberSetting>

src/components/settings_modal/helpers/number_setting.js

@@ -4,6 +4,21 @@ export default {
   ...Setting,
   props: {
     ...Setting.props,
+    min: {
+      type: Number,
+      required: false,
+      default: 1
+    },
+    max: {
+      type: Number,
+      required: false,
+      default: 1
+    },
+    step: {
+      type: Number,
+      required: false,
+      default: 1
+    },
     truncate: {
       type: Number,
       required: false,

src/components/settings_modal/tabs/appearance_tab.js

@@ -259,12 +259,10 @@ const AppearanceTab = {
         return ['sidebar', 'content', ...notif]
       }
     },
-    instanceSpecificPanelPresent () { return this.$store.state.instance.showInstanceSpecificPanel },
     instanceWallpaperUsed () {
       return this.$store.state.instance.background &&
         !this.$store.state.users.currentUser.background_image
     },
-    instanceShoutboxPresent () { return this.$store.state.instance.shoutAvailable },
     language: {
       get: function () { return this.$store.getters.mergedConfig.interfaceLanguage },
       set: function (val) {

src/components/settings_modal/tabs/general_tab.js

@@ -81,6 +81,8 @@ const GeneralTab = {
         this.$store.dispatch('setOption', { name: 'interfaceLanguage', value: val })
       }
     },
+    instanceShoutboxPresent () { return this.$store.state.instance.shoutAvailable },
+    instanceSpecificPanelPresent () { return this.$store.state.instance.showInstanceSpecificPanel },
     ...SharedComputedObject()
   },
   methods: {