Merge appTheme and appInst into appInst

No need for two config variables. Use the appInst config to get the
correct theme.

frontend/src/appConfig.ts

@@ -16,14 +16,9 @@ export const appTimezone: string = 'Europe/Oslo'
 export const appVersion: string = process.env.REACT_APP_VERSION as string
 export const appName: string = process.env.REACT_APP_NAME as string
 
-/* Institution */
+/* Institution (used for features and theming */
 export const appInst: string = env.REACT_APP_INST as string
 
-/* Theming */
-export const appTheme: string = env.REACT_APP_THEME
-  ? (env.REACT_APP_THEME as string)
-  : 'default'
-
 /* Show warning in the footer about this being a staging/test system */
 export const appStagingWarning: boolean =
   env.REACT_APP_STAGING_WARNING === 'true'

frontend/src/components/debug/index.tsx

-import React, { useState } from 'react'
+import { useState } from 'react'
 import { useTranslation } from 'react-i18next'
 
 import CheckIcon from '@mui/icons-material/Check'
@@ -15,7 +15,7 @@ import {
   Divider,
 } from '@mui/material'
 
-import { appTheme, appTimezone, appVersion, appInst } from 'appConfig'
+import { appInst, appTimezone, appVersion, appInst } from 'appConfig'
 import { Link } from 'react-router-dom'
 
 const Yes = () => <CheckIcon color="success" />
@@ -139,7 +139,7 @@ export const Debug = () => {
     ['Version', appVersion],
     ['Timezone', appTimezone],
     ['Language', i18n.language],
-    ['Theme', appTheme],
+    ['Theme', appInst],
     ['Institution', appInst],
     ['API reachable?', apiHealth === 'yes' ? <Yes /> : apiHealth],
     ['Authenticated?', isAuthenticated ? <Yes /> : <No />],

frontend/src/components/logobars/LogoBar.tsx

-import React from 'react'
-import { appTheme } from 'appConfig'
+import { appInst } from 'appConfig'
 import UiOLogoBar from './UiO'
 import UiBLogoBar from './UiB'
 
-
 function LogoBar() {
-  switch (appTheme) {
+  switch (appInst) {
     case 'uio':
       return <UiOLogoBar />
     case 'uib':
@@ -15,4 +13,4 @@ function LogoBar() {
   }
 }
 
-export default LogoBar
+export default LogoBar
\ No newline at end of file

frontend/src/themes/index.ts

@@ -5,7 +5,7 @@ import uibTheme from 'themes/uib'
 import uioTheme from 'themes/uio'
 import mainTheme from 'themes/main'
 
-import { appTheme } from 'appConfig'
+import { appInst } from 'appConfig'
 
 declare module '@mui/material/styles' {
   interface Theme {
@@ -33,13 +33,11 @@ declare module '@mui/material/styles' {
 export const defaultTheme = createTheme(mainTheme)
 
 function getTheme() {
-  switch (appTheme) {
+  switch (appInst) {
     case 'uib':
       return createTheme(deepmerge(mainTheme, uibTheme))
     case 'uio':
       return createTheme(deepmerge(mainTheme, uioTheme))
-    case 'default':
-      return defaultTheme
     default:
       return defaultTheme
   }