Adding edit of incoming webhook (#5272)

Adding edit of outgoing webhook
Fixing spelling of error
Fixing style
Changing from PUT to POST for updates
Fixing test failures due to merge

store/store.go

@@ -260,9 +260,11 @@ type WebhookStore interface {
 	GetIncoming(id string, allowFromCache bool) StoreChannel
 	GetIncomingList(offset, limit int) StoreChannel
 	GetIncomingByTeam(teamId string, offset, limit int) StoreChannel
+	UpdateIncoming(webhook *model.IncomingWebhook) StoreChannel
 	GetIncomingByChannel(channelId string) StoreChannel
 	DeleteIncoming(webhookId string, time int64) StoreChannel
 	PermanentDeleteIncomingByUser(userId string) StoreChannel
+
 	SaveOutgoing(webhook *model.OutgoingWebhook) StoreChannel
 	GetOutgoing(id string) StoreChannel
 	GetOutgoingByChannel(channelId string) StoreChannel
@@ -270,6 +272,7 @@ type WebhookStore interface {
 	DeleteOutgoing(webhookId string, time int64) StoreChannel
 	PermanentDeleteOutgoingByUser(userId string) StoreChannel
 	UpdateOutgoing(hook *model.OutgoingWebhook) StoreChannel
+
 	AnalyticsIncomingCount(teamId string) StoreChannel
 	AnalyticsOutgoingCount(teamId string) StoreChannel
 	InvalidateWebhookCache(webhook string)