Fixes for the team user lists in the system console (#4294)

webapp/stores/team_store.jsx

@@ -205,7 +205,7 @@ class TeamStoreClass extends EventEmitter {
     }
 
     getMembersInTeam(teamId = this.getCurrentId()) {
-        return this.members_in_team[teamId] || {};
+        return Object.assign({}, this.members_in_team[teamId]) || {};
     }
 
     hasActiveMemberInTeam(teamId = this.getCurrentId(), userId) {

webapp/stores/user_store.jsx

@@ -169,11 +169,12 @@ class UserStoreClass extends EventEmitter {
     // System-Wide Profiles
 
     saveProfiles(profiles) {
+        const newProfiles = Object.assign({}, profiles);
         const currentId = this.getCurrentId();
-        if (profiles[currentId]) {
-            Reflect.deleteProperty(profiles, currentId);
+        if (newProfiles[currentId]) {
+            Reflect.deleteProperty(newProfiles, currentId);
         }
-        this.profiles = Object.assign({}, this.profiles, profiles);
+        this.profiles = Object.assign({}, this.profiles, newProfiles);
     }
 
     getProfiles() {
@@ -331,6 +332,20 @@ class UserStoreClass extends EventEmitter {
         return profiles;
     }
 
+    removeProfileFromTeam(teamId, userId) {
+        const userIds = this.profiles_in_team[teamId];
+        if (!userIds) {
+            return;
+        }
+
+        const index = userIds.indexOf(userId);
+        if (index === -1) {
+            return;
+        }
+
+        userIds.splice(index, 1);
+    }
+
     // Channel-Wide Profiles
 
     saveProfilesInChannel(channelId = ChannelStore.getCurrentId(), profiles) {