fix(frontend-config): use guest access level instead of allowAnonymous

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

frontend/src/api/config/types.ts

@@ -5,10 +5,10 @@
  */
 
 export interface FrontendConfig {
-  allowAnonymous: boolean
   allowRegister: boolean
   authProviders: AuthProvider[]
   branding: BrandingConfig
+  guestAccess: GuestAccessLevel
   useImageProxy: boolean
   specialUrls: SpecialUrls
   version: BackendVersion
@@ -16,6 +16,13 @@ export interface FrontendConfig {
   maxDocumentLength: number
 }
 
+export enum GuestAccessLevel {
+  DENY = 'deny',
+  READ = 'read',
+  WRITE = 'write',
+  CREATE = 'create'
+}
+
 export enum AuthProviderType {
   DROPBOX = 'dropbox',
   FACEBOOK = 'facebook',