V4.0.2 - Updated interim codebase for Sprint 2

Completed following functionalities:
1. Infowindow for parcel layers, road center line layers and overlay
layers; Work is in progress for showing the infowindow for condos
a. We have added dummy overlay layer that is not in the basemap extent;
Basemap is not visible at this level; you may use search string as ‘na’
to observe this behavior
2. Incorporated feedback on Basemap switcher – If there is only one
basemap then the square should not be visible