[Glitch] Change routing paths to use usernames in web UI

Port 52e5c07948 to glitch-soc

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

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

@@ -0,0 +1,15 @@
+import { ACCOUNT_IMPORT, ACCOUNTS_IMPORT } from '../actions/importer';
+import { Map as ImmutableMap } from 'immutable';
+
+const initialState = ImmutableMap();
+
+export default function accountsMap(state = initialState, action) {
+  switch(action.type) {
+  case ACCOUNT_IMPORT:
+    return state.set(action.account.acct, action.account.id);
+  case ACCOUNTS_IMPORT:
+    return state.withMutations(map => action.accounts.forEach(account => map.set(account.acct, account.id)));
+  default:
+    return state;
+  }
+};