Update Design Editor to 0.3.31 in WATT
Update Design Editor to 0.3.31 in WATT

[Issue]
https://github.com/Samsung/WATT/issues/111
https://github.com/Samsung/WATT/issues/109
[Problem] Not up to-date DE, issues exist
[Solution] Release DE with following commits:
- Release 0.3.31
- Fix loading Design Editor on WATT
- Fix npm install error issue
- Remove Animation Palen option from side menu

Signed-off-by: Lukasz Slachciak <7191b101e83bc5e18a48ed6525c5f2702ba992bd@samsung.com>

HunseopJeong/WATT,HunseopJeong/WATT,HunseopJeong/WATT,HunseopJeong/WATT,HunseopJeong/WATT,HunseopJeong/WATT