Merge 3.7 changes into master (#5679)

* Save schema version for 3.7 (#5675)

* Adding index and cache to reactinos store (#5654)

* Fix badge count for push notifications (#5672)

store/store.go

@@ -348,6 +348,8 @@ type FileInfoStore interface {
 type ReactionStore interface {
 	Save(reaction *model.Reaction) StoreChannel
 	Delete(reaction *model.Reaction) StoreChannel
-	GetForPost(postId string) StoreChannel
+	InvalidateCacheForPost(postId string)
+	InvalidateCache()
+	GetForPost(postId string, allowFromCache bool) StoreChannel
 	DeleteAllWithEmojiName(emojiName string) StoreChannel
 }