Replaced Express with Koa

Now with generators and promises. About 200 lines less code.
Updated dependencies
Renamed windowSize to ntile
Updated Angular XHR paths to match the new routes
Corrected file paths
Deleted unused template
Reorganized templates
Methods to filter matched extent
Renamed brush to minimap
Minor changes and notes
Moved templates
Polymer!
Renamed ntile back to windowSize, but ...

… query parameter is now w for windowSize and e for extent.
Fixed data property renaming (s/avg[xyz]/[xyz]/g)

I just removed min{x,y,z} and max{x,y,z} completely from the SQL query,
so avg{x,y,z} becomes just x, y and z.
Utilizing sensor counts
Minor changes
Doing the timestamp fix (-3600000)

Without it all the timestamps are shifted by one hour. Will fix later.
React!
Minor changes
Merge pull request #64 from rwilhelm/dev

Dev