[fix] update check config after a short delay

* we need to wait until bixby-agent is actually up (connected to the
* master)
display sorted metadata
graph styles: use stacked display, thicker lines
better graph layout (using grid)
lower downsampling for check lookups as well
[refactor] common default_args method
nicer color for graphs
restrict mobile viewport (don't allow zooming)
fixed button styles
only enable touch events in the detailed view
upgraded dygraph to latest master (fixes hidpi/retina issue)
removed navbar-fixed-top
hide navbar dropdown after click on mobile