Fetch banner.txt from public URL instead of config (#1216)

src/redux/banner/reducers.ts

@@ -8,9 +8,8 @@ import { Reducer } from 'redux'
 import { BannerActions, BannerActionType, BannerState, SetBannerAction } from './types'
 
 export const initialState: BannerState = {
-  show: false,
-  text: '',
-  timestamp: ''
+  text: undefined,
+  lastModified: null
 }
 
 export const BannerReducer: Reducer<BannerState, BannerActions> = (state: BannerState = initialState, action: BannerActions) => {

src/redux/banner/types.ts

@@ -15,11 +15,11 @@ export interface BannerActions extends Action<BannerActionType> {
 }
 
 export interface SetBannerAction extends BannerActions {
+  type: BannerActionType.SET_BANNER
   state: BannerState;
 }
 
 export interface BannerState {
-  show: boolean
-  text: string
-  timestamp: string
+  text: string | undefined
+  lastModified: string | null
 }

src/redux/config/reducers.ts

@@ -28,10 +28,6 @@ export const initialState: Config = {
     name: '',
     logo: ''
   },
-  banner: {
-    text: '',
-    timestamp: ''
-  },
   customAuthNames: {
     ldap: '',
     oauth2: '',