Simple version
UI prototype
Create pages and transition between them
Initialize in michishiki.js
Minor change
Delete unnecessary pages
Add navbar click event
Implement marker utility functions

1. Marker.isLocal()
2. Marker.setVisible()
Display markers corresponding to selected mode, refs #11
Update marker visibility based on 'mode' if markers are updated, refs #11
Enable post page
Set marker icon, refs #12
Create map before getting current location
Set app icon
Set select place marker latlng based on main map center latlng
Modify default map zoom, refs #3
Change marker icon
Set default map location