[PLT-4340] Channel Mute and "/mute" command #7617 (#7713)

* Add command and store changes to allow mute toggling

* Change channel muting to use ChannelMember notification structure

* Suppress email and push notifications for a muted channel

* Make i18n keys issue-compliant

* Add notification-cache handling for channel-muting

* Add channel handle for channel-muting slash-command

* Add unit test for mute command

* Merge branch 'master' into PLT-4340

# Conflicts:
#	app/notification.go

* Fix issue that command_mute responses will be overwritten

* Fix i18n key for channel muting

* Apply new Provider Interface to MuteCommand

* Migrate mute notification property to mark_unread

PLT-4340

* Make some i18n improvements for command_mute

PLT-4340

* Remove de.json translations

* Prevent push notifications when channel is muted

* Treat Group messages like Direct messages

* Fix unit test

* Send WS event when the channel member notify props changed

model/websocket_message.go

@@ -10,43 +10,44 @@ import (
 )
 
 const (
-	WEBSOCKET_EVENT_TYPING              = "typing"
-	WEBSOCKET_EVENT_POSTED              = "posted"
-	WEBSOCKET_EVENT_POST_EDITED         = "post_edited"
-	WEBSOCKET_EVENT_POST_DELETED        = "post_deleted"
-	WEBSOCKET_EVENT_CHANNEL_DELETED     = "channel_deleted"
-	WEBSOCKET_EVENT_CHANNEL_CREATED     = "channel_created"
-	WEBSOCKET_EVENT_CHANNEL_UPDATED     = "channel_updated"
-	WEBSOCKET_EVENT_DIRECT_ADDED        = "direct_added"
-	WEBSOCKET_EVENT_GROUP_ADDED         = "group_added"
-	WEBSOCKET_EVENT_NEW_USER            = "new_user"
-	WEBSOCKET_EVENT_ADDED_TO_TEAM       = "added_to_team"
-	WEBSOCKET_EVENT_LEAVE_TEAM          = "leave_team"
-	WEBSOCKET_EVENT_UPDATE_TEAM         = "update_team"
-	WEBSOCKET_EVENT_DELETE_TEAM         = "delete_team"
-	WEBSOCKET_EVENT_USER_ADDED          = "user_added"
-	WEBSOCKET_EVENT_USER_UPDATED        = "user_updated"
-	WEBSOCKET_EVENT_USER_ROLE_UPDATED   = "user_role_updated"
-	WEBSOCKET_EVENT_MEMBERROLE_UPDATED  = "memberrole_updated"
-	WEBSOCKET_EVENT_USER_REMOVED        = "user_removed"
-	WEBSOCKET_EVENT_PREFERENCE_CHANGED  = "preference_changed"
-	WEBSOCKET_EVENT_PREFERENCES_CHANGED = "preferences_changed"
-	WEBSOCKET_EVENT_PREFERENCES_DELETED = "preferences_deleted"
-	WEBSOCKET_EVENT_EPHEMERAL_MESSAGE   = "ephemeral_message"
-	WEBSOCKET_EVENT_STATUS_CHANGE       = "status_change"
-	WEBSOCKET_EVENT_HELLO               = "hello"
-	WEBSOCKET_EVENT_WEBRTC              = "webrtc"
-	WEBSOCKET_AUTHENTICATION_CHALLENGE  = "authentication_challenge"
-	WEBSOCKET_EVENT_REACTION_ADDED      = "reaction_added"
-	WEBSOCKET_EVENT_REACTION_REMOVED    = "reaction_removed"
-	WEBSOCKET_EVENT_RESPONSE            = "response"
-	WEBSOCKET_EVENT_EMOJI_ADDED         = "emoji_added"
-	WEBSOCKET_EVENT_CHANNEL_VIEWED      = "channel_viewed"
-	WEBSOCKET_EVENT_PLUGIN_ACTIVATED    = "plugin_activated"   // EXPERIMENTAL - SUBJECT TO CHANGE
-	WEBSOCKET_EVENT_PLUGIN_DEACTIVATED  = "plugin_deactivated" // EXPERIMENTAL - SUBJECT TO CHANGE
-	WEBSOCKET_EVENT_ROLE_UPDATED        = "role_updated"
-	WEBSOCKET_EVENT_LICENSE_CHANGED     = "license_changed"
-	WEBSOCKET_EVENT_CONFIG_CHANGED      = "config_changed"
+	WEBSOCKET_EVENT_TYPING                 = "typing"
+	WEBSOCKET_EVENT_POSTED                 = "posted"
+	WEBSOCKET_EVENT_POST_EDITED            = "post_edited"
+	WEBSOCKET_EVENT_POST_DELETED           = "post_deleted"
+	WEBSOCKET_EVENT_CHANNEL_DELETED        = "channel_deleted"
+	WEBSOCKET_EVENT_CHANNEL_CREATED        = "channel_created"
+	WEBSOCKET_EVENT_CHANNEL_UPDATED        = "channel_updated"
+	WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED = "channel_member_updated"
+	WEBSOCKET_EVENT_DIRECT_ADDED           = "direct_added"
+	WEBSOCKET_EVENT_GROUP_ADDED            = "group_added"
+	WEBSOCKET_EVENT_NEW_USER               = "new_user"
+	WEBSOCKET_EVENT_ADDED_TO_TEAM          = "added_to_team"
+	WEBSOCKET_EVENT_LEAVE_TEAM             = "leave_team"
+	WEBSOCKET_EVENT_UPDATE_TEAM            = "update_team"
+	WEBSOCKET_EVENT_DELETE_TEAM            = "delete_team"
+	WEBSOCKET_EVENT_USER_ADDED             = "user_added"
+	WEBSOCKET_EVENT_USER_UPDATED           = "user_updated"
+	WEBSOCKET_EVENT_USER_ROLE_UPDATED      = "user_role_updated"
+	WEBSOCKET_EVENT_MEMBERROLE_UPDATED     = "memberrole_updated"
+	WEBSOCKET_EVENT_USER_REMOVED           = "user_removed"
+	WEBSOCKET_EVENT_PREFERENCE_CHANGED     = "preference_changed"
+	WEBSOCKET_EVENT_PREFERENCES_CHANGED    = "preferences_changed"
+	WEBSOCKET_EVENT_PREFERENCES_DELETED    = "preferences_deleted"
+	WEBSOCKET_EVENT_EPHEMERAL_MESSAGE      = "ephemeral_message"
+	WEBSOCKET_EVENT_STATUS_CHANGE          = "status_change"
+	WEBSOCKET_EVENT_HELLO                  = "hello"
+	WEBSOCKET_EVENT_WEBRTC                 = "webrtc"
+	WEBSOCKET_AUTHENTICATION_CHALLENGE     = "authentication_challenge"
+	WEBSOCKET_EVENT_REACTION_ADDED         = "reaction_added"
+	WEBSOCKET_EVENT_REACTION_REMOVED       = "reaction_removed"
+	WEBSOCKET_EVENT_RESPONSE               = "response"
+	WEBSOCKET_EVENT_EMOJI_ADDED            = "emoji_added"
+	WEBSOCKET_EVENT_CHANNEL_VIEWED         = "channel_viewed"
+	WEBSOCKET_EVENT_PLUGIN_ACTIVATED       = "plugin_activated"   // EXPERIMENTAL - SUBJECT TO CHANGE
+	WEBSOCKET_EVENT_PLUGIN_DEACTIVATED     = "plugin_deactivated" // EXPERIMENTAL - SUBJECT TO CHANGE
+	WEBSOCKET_EVENT_ROLE_UPDATED           = "role_updated"
+	WEBSOCKET_EVENT_LICENSE_CHANGED        = "license_changed"
+	WEBSOCKET_EVENT_CONFIG_CHANGED         = "config_changed"
 )
 
 type WebSocketMessage interface {