[Glitch] Add customizable user roles

Port front-end changes from 44b2ee3485 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/reducers/meta.js

@@ -4,12 +4,13 @@ import { Map as ImmutableMap } from 'immutable';
 const initialState = ImmutableMap({
   streaming_api_base_url: null,
   access_token: null,
+  permissions: '0',
 });
 
 export default function meta(state = initialState, action) {
   switch(action.type) {
   case STORE_HYDRATE:
-    return state.merge(action.state.get('meta'));
+    return state.merge(action.state.get('meta')).set('permissions', action.state.getIn(['role', 'permissions']));
   default:
     return state;
   }