Room dialog (#905)

* support ToolIcon className and fix label padding

* factor some ExportDialog classes out to Modal

* initial RoomDialog prototype

* change label for another-session button

* remove unused css

* add color comments

* Move the collaboration button to the main menu, add support for mobile

* remove button for creating another session

* add locks

* Fix alignment issue

* Reorder button

* reuse current scene for collab session

* keep collaboration state on restore

Co-authored-by: Jed Fox <git@twopointzero.us>

src/data/index.ts

@@ -92,7 +92,7 @@ export function getCollaborationLinkData(link: string) {
 export async function generateCollaborationLink() {
   const id = await generateRandomID();
   const key = await generateEncryptionKey();
-  return `${window.location.href}#room=${id},${key}`;
+  return `${window.location.origin}#room=${id},${key}`;
 }
 
 async function getImportedKey(key: string, usage: string): Promise<CryptoKey> {