Cleanup of locales and changed a variable name in Stats.php
Fixed locales
Fixed dutch language file
Corrected typo in dutch lang file
Changed empty check to null check
Fixed a typo in code
Stats class cleanup
Changed comments in stats class
Moved css for homepage to different file
Index and layout template cleanup
Changed 4 requests into one request for fetching min/max values of the datepickers
Fixed a translation in the dutch language file
Changed date calculations