Feature
* Introduce API for managing default_answers ([`995138a`](https://github.com/projectcaluma/caluma/commit/995138a735ab736abe771c2b0574d72bf55fe286))
* Pass user to copy method on answer and doc ([`38941b0`](https://github.com/projectcaluma/caluma/commit/38941b0e6a336d2578b5786fd1c641565bd788a7))
Fix
* Fix empty answers ([`fc6300b`](https://github.com/projectcaluma/caluma/commit/fc6300bd578faee85fd8ecc1b1109cd1976d3bfa))