Server rework for API change and paradigm shift (#23)

* start with group permissions implementation

* some minor refactoring

* adjust hub for api changes

* fixes and database migration

* fixes sending online/offline message to clients stuff

* remove admin stuff from server

* fixes get server permissions

* send group pair info to client on joining a group

* send online only on sending connection dto

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Co-authored-by: rootdarkarchon <root.darkarchon@outlook.com>

MareSynchronosServer/MareSynchronosShared/Models/Group.cs

@@ -13,4 +13,6 @@ public class Group
     public string Alias { get; set; }
     public bool InvitesEnabled { get; set; }
     public string HashedPassword { get; set; }
+    public bool DisableSounds { get; set; }
+    public bool DisableAnimations { get; set; }
 }