Going back to “Import Metadata” screen should maintain the previously populated data

[bhanvimenghani]

Problem Faced:
Currently the user selections on Datasource Tab are lost if the user moves to Experiments tab, which should not happen, we would like to retain use selected data

Expectations / Delivery Requirements:
The data in the screen should remain populated even if the user switches tabs or moves across the ui

Where to Start?
We need to setup global state management in react using redux in order to store the state which in turn will display it at all times.