Implement a Loading Screen

[taylor-stevens]

Currently, If information such as Leaflets Tile Panes are struggling to load, there is no backup display that occurs to users. We should have a default screen such that the LoadingScreen.js component is displayed when the tiles are loading, and the fully loaded map is then displayed to a user (instead of some percent of the full map, with unloaded tiles). To do this we have to:

• Create the .scss for the loading screen
• Use a hook to determine whether the tiles have loaded from Leaflet and whether to display the loading screen or the map
• repeat for other components that might have slow loading times.