PLT-4167 Team Sidebar (#4569)

* PLT-4167 Team Sidebar

* Address feedback from PM

* change route from my_members to members

* bug fixes

* Updating styles for teams sidebar (#4681)

* Added PM changes

* Fix corner cases

* Addressing feedback

* use two different endpoints

* Bug fixes

* Rename model and client functions, using preferences to store last team and channel viewed

* Fix mobile notification count and closing the team sidebar

* unit test, fixed bad merge and retrieve from cached when available

* bug fixes

* use id for last channel in preferences, query optimization

* Updating multi team css (#4830)

model/team_member.go

@@ -16,6 +16,12 @@ type TeamMember struct {
 	DeleteAt int64  `json:"delete_at"`
 }
 
+type TeamUnread struct {
+	TeamId       string `json:"team_id"`
+	MsgCount     int64  `json:"msg_count"`
+	MentionCount int64  `json:"mention_count"`
+}
+
 func (o *TeamMember) ToJson() string {
 	b, err := json.Marshal(o)
 	if err != nil {
@@ -55,6 +61,25 @@ func TeamMembersFromJson(data io.Reader) []*TeamMember {
 	}
 }
 
+func TeamsUnreadToJson(o []*TeamUnread) string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func TeamsUnreadFromJson(data io.Reader) []*TeamUnread {
+	decoder := json.NewDecoder(data)
+	var o []*TeamUnread
+	err := decoder.Decode(&o)
+	if err == nil {
+		return o
+	} else {
+		return nil
+	}
+}
+
 func (o *TeamMember) IsValid() *AppError {
 
 	if len(o.TeamId) != 26 {