Also: refactor(communities), moved request to join funcs to communities module
This is needed because we can now request to join from the Import popup
Closes#11242
1. Fix an issue where importing a community using private key triggers the import finished event without updating the community data if the community is already imported with public key
2. Show toast messages on importCommunity and privateKeyRemoved events
3. Group community import toast messages handlers and move them from ContactsColumnView to AppMain. IMO these toast messages handlers should not be dependent on ContactsColumnView.
- Renamed main `CommunitiesPortal` folder to `Communities`.
- Created new `layouts` folder.
- Moved layout files from chat to communities.
- Created new `helpers` folder.
- Moved helpers files from chat to communities.
- Moved `controls/community` files from chat to communities `controls`.
- Moved `panels/communities` files from chat to communities `panels`.
- Moved `popups/community` files from chat to communities `popups`.
- Moved `views/community` files from chat to communities `views`.
- Moved `CommunityBanner` file from shared to `Communities/controls`. Only used in communities context.
- Moved `CommunitySettingsView` and `CommunityColumnView` files from chat to communities `views`.
- Moved `PermissionsStore.qml` file to `shared/stores`.
- Updated imports.
- Updated storybook.
Part of #6204
Igor Sirotin
Jonathan Rainville
Boris Melnik
Lukáš Tinkl
Alexandra Betouni
Alex Jbanca
Noelia