Hide calendar upload widget when not logged in, also show the calendar if not logged
Support UTF8 BOM in blog uploads

Uses Text.Pandoc.UTF8.toStringLazy to strip the BOM
Fix pandoc tags
Styling

...using mixins, flexboxes. Also some small css fixes.
Fixed blog authentication, added help section, colored nav and footer backgrounds
Merge branch 'master' into bps

Conflicts:
	Foundation.hs
Merge pull request #3 from TK009/bps

Kaikenlaista kivaa