/js/control.js - attach listeners to the checkboxes next to the data categories on the right panel. When clicked, the layer with corresponding on the data type clicked, is visualised on the map. The event handler also checks if the data has expired(using timestamp)
sets the default data to be shown to Police
/js/data_process.js - sets the timestamp of the layer, when updating its content
Merge branch 'feature/implement_server_side' of https://github.com/cloudcomputingproject/main_repo into feature/implement_server_side

Conflicts:
	application/controller/controller.py
	application/static/js/controls.js