Fix Choropleth scaling and legend display
The corresponding scale defined in maps settings is no longer applied to the render of the map which ends up too big: https://de-qa.siscc.org/vis?lc=en&df[ds]=qa%3Astable&df[id]=EDU_NEAC%40EAG_LFS&df[ag]=OECD.EDU&df[vs]=1.0&av=true&pd=2017%2C2018&dq=.ZA%2BGB%2BAR.......A&ly[rw]=ATTAINMENT_LEV%2CVALUE_TYPE&ly[cl]=LABOUR_FORCE_STATUS&ly[rs]=REF_AREA&lb=nm&vw=cp&mp[id]=world&mp[names][en]=world%20countries&mp[names][fr]=pays%20du%20monde&mp[lv]=countries And the legends is not displayed anymore