Log Message:
* vobject != vdirsyncer.vobject, so correct dependency and remove patches.
  https://github.com/Kozea/Radicale/issues/675#issuecomment-320029350

* override folder for storing local collections, from
  /var/lib/radicale/collections to ${PREFIX}/share/radicale/collections

Update Radicale2 to 2.1.4

2.1.4 - Wild Radish
-------------------

This feature is not compatible with the 1.x.x versions. See
http://radicale.org/1to2/ if you want to switch from 1.x.x to
2.x.x.

* Fix incorrect time range matching and calculation for some edge-cases with
  rescheduled recurrences
* Fix owner property

2.1.3 - Wild Radish
-------------------

This feature is not compatible with the 1.x.x versions. See
http://radicale.org/1to2/ if you want to switch from 1.x.x to
2.x.x.

* Enable timeout for SSL handshakes and move them out of the main thread
* Create cache entries during upload of items
* Stop built-in server on Windows when Ctrl+C is pressed
* Prevent slow down when multiple requests hit a collection during cache warm-up

2.1.2 - Wild Radish
-------------------

This feature is not compatible with the 1.x.x versions. See
http://radicale.org/1to2/ if you want to switch from 1.x.x to
2.x.x.

* Remove workarounds for bugs in VObject < 0.9.5
* Error checking of collection tags and associated components
* Improve error checking of uploaded collections and components
* Don't delete empty collection properties implicitly
* Improve logging of VObject serialization