Add the following new Sandstorm features and fixes:

- All Boards page [so it's possible to go back from subtask board](https://github.com/wekan/wekan/issues/2082)
- Board favorites
- New Sandstorm board first user is Admin and [has IFTTT Rules](https://github.com/wekan/wekan/issues/2125)
  and Standalone Wekan Admin Panel. Probably some Admin Panel features do not work yet. Please keep backup of your grains before testig Admin Panel.
- Linked Cards and Linked Boards.
- Some not needed options like Logout etc have been hidden from top bar right menu.
- [Import board now works. "Board not found" is not problem anymore](https://github.com/wekan/wekan/issues/1430), because you can go to All Boards page to change to imported board.

and removes the following features:

- Remove Welcome Board from Standalone Wekan, [to fix Welcome board not translated](https://github.com/wekan/wekan/issues/1601).
  Sandstorm Wekan does not have Welcome Board.

Thanks to xet7 !

Closes #2125,
closes #2082,
closes #1430,
closes #1601,
related #2205,
related #2070,
related #1695,
related #1192.

models/users.js

@@ -559,7 +559,7 @@ if (Meteor.isServer) {
   });
   Accounts.onCreateUser((options, user) => {
     const userCount = Users.find().count();
-    if (!isSandstorm && userCount === 0) {
+    if (userCount === 0) {
       user.isAdmin = true;
       return user;
     }
@@ -675,7 +675,7 @@ if (Meteor.isServer) {
   CollectionHooks.getUserId = () => {
     return fakeUserId.get() || getUserId();
   };
-
+  /*
   if (!isSandstorm) {
     Users.after.insert((userId, doc) => {
       const fakeUser = {
@@ -704,6 +704,7 @@ if (Meteor.isServer) {
       });
     });
   }
+  */
 
   Users.after.insert((userId, doc) => {