[Bug Report] Localization

[fabianoroberto]

Element UI version

2.1.0

OS/Browsers version

Any

Vue version

2.5.9

Reproduction Link

element/src/locale/lang/it.js

Line 23 in c3ee5fc

year: 'Anno',

Steps to reproduce

Open date picker calendar

What is Expected?

The label of calendar header is "2018 Anno Luglio" instead of "2018 Luglio".

What is actually happening?

The label of calendar header is "2018 Anno Luglio" instead of "2018 Luglio".
This happened because in English version the above translation for 'year' is empty.

[ziyoung]

@fabianoroberto you can make a pull request. 😀