How to reinstall Calendar Storage? I wanted to uninstall the default Calendar app to replace with Google Calendar. However, I accidentally uninstalled Calendar Storage before uninstalled the default Calendar app. The Google Calendar app won't work every time I try to create an event/plan. I assume this is because I uninstalled the Calendar Storage (app?).

How do I retrieve it? Is there a repo wherein I can just download it? I tried Googling, found nothing. My phone is a Huwawei Y320, Android OS version is 4.2.2
You will have to download this app and install it as a system app, using Link2SD or any similar app. This is just another apk file from another Android Jelly Bean 4.2.2 phone. 

Note : Please backup all your data before trying to do so. This way of installing apps is actually not recommended, but works out most of the times.