started to update config
started on moving to vdir based backend

* all caldav functionality has been removed
* the current db layout is still used (but status flags aren't used
 anymore)
* creating, changing and deleting events from (i)khal doesn't work yet
doc: add blank line
doc update
bugfix in aux.new_event
WIP (partly BROKEN)

* ikhal is pretty broken at the moment (cannot delete or modify events)
* you won't be able to upload new events as they are only new events, not
  calendars
* got rid of all the status flags
* added some tests
uploading events should work again

as events are now saved as calendars again. And there are event tests
for it :D
travis init
trying to get travis to run branch vdir
added vdirsyncer to requirements
bugfix: ikhal (calendar-list got depleted)
bugfix ikhal: new events where had false accounts

This is `vdir` branch's of way of dealing with the issue hopefully fixed in
7f49ffe for `master` branch.

This should fix github issue #36.
Thanks to jasonwryan for reporting it.
Fix typo in khal config sample
Ignore VTODO items
Merge pull request #37 from untitaker/vdir

Some fixes
ikhal: can mark events for deletion again

but they won't get deleted just yet.

"Delete"/"Undelete" with D if an event is focused.
Merge branch 'vdir' of github.com:geier/khal into vdir
Autopep8
Some manual fixes for Flake8
cleanup: calendar_display_test (also: tests!)

will soon be integrated into a new common module for all terminal
interface related stuff