MM-33903 rename slash commands & permission (#17494)

- rename slash commands
    - "remote" -> "secure-connection"
    - "share" -> "share-channel"
- change status icons to text (translated)
- remove channel invite "Description" field
- rename permission "manage_remote_clusters" -> "manage_secure_connections"

store/sqlstore/shared_channel_store.go

@@ -38,7 +38,6 @@ func newSqlSharedChannelStore(sqlStore *SqlStore) store.SharedChannelStore {
 		tableSharedChannelRemotes := db.AddTableWithName(model.SharedChannelRemote{}, "SharedChannelRemotes").SetKeys(false, "Id", "ChannelId")
 		tableSharedChannelRemotes.ColMap("Id").SetMaxSize(26)
 		tableSharedChannelRemotes.ColMap("ChannelId").SetMaxSize(26)
-		tableSharedChannelRemotes.ColMap("Description").SetMaxSize(64)
 		tableSharedChannelRemotes.ColMap("CreatorId").SetMaxSize(26)
 		tableSharedChannelRemotes.ColMap("RemoteId").SetMaxSize(26)
 		tableSharedChannelRemotes.SetUniqueTogether("ChannelId", "RemoteId")
@@ -524,7 +523,7 @@ func (s SqlSharedChannelStore) GetRemotesStatus(channelId string) ([]*model.Shar
 	var status []*model.SharedChannelRemoteStatus
 
 	query := s.getQueryBuilder().
-		Select("scr.ChannelId, rc.DisplayName, rc.SiteURL, rc.LastPingAt, scr.NextSyncAt, scr.Description, sc.ReadOnly, scr.IsInviteAccepted").
+		Select("scr.ChannelId, rc.DisplayName, rc.SiteURL, rc.LastPingAt, scr.NextSyncAt, sc.ReadOnly, scr.IsInviteAccepted").
 		From("SharedChannelRemotes scr, RemoteClusters rc, SharedChannels sc").
 		Where("scr.RemoteId = rc.RemoteId").
 		Where("scr.ChannelId = sc.ChannelId").