UI: nested groups: fixes first and last IDs in a parent

TODO.md

@@ -1,15 +1,20 @@
 # TODO:
 
+## Current:
+- [ ] UI: vertical layout (needs for email in registration)
+- [ ] Nested groups
+- [ ] Create dynamic map of elements IDs and their pointers
+
 ## Features:
 - [x] Search files
 - [x] Correct spacing in the search bar
 - [x] Finish registration
-- [ ] UI: vertical layout (needs for email in registration)
 - [ ] Get rid of old notification mechanism
 - [ ] Privilege settings for files
 - [ ] Files removal
 - [ ] Encryption
 - [ ] UTF-8 support
+
 ## Fixes:
 - [ ] Check and fix registration and login
 - [ ] Hotkeys for buttons