Properly handle Cascaded remote Services

[NyakudyaA]

Problem

• Add a remote service (Web Map Service) i.e. https://sedac.ciesin.columbia.edu/geoserver/ows
• Explore the layers available

Download Dataset

Filter Dataset

Proposed Solution

• Grey out the Download dataset or remove it completely since we cannot download the cascaded WMS anyway
• Grey out the Filter or remove it completely since we cannot fetch attributes for the WMS