Version 0.8.0

• Interface:
  • moved day & name range selections to sub-menus
  • replaced "Now" with default during-event hiding of past items
• Code:
  • better item sort, better filter label sort
  • general code cleanup
  • mv cache.manifest konopas.appcache
  • mv data/sample/ demo/
  • bugfix: parse_date workaround for buggy DST implementations
• Localization: normalized English to British spelling