Add documentation. Remove swagger.
Fix failing migration. Remove language field. Rename categories > keywords.

Event should be able to have multiple languages,
implement this in the future.
Documentation update.
Remove field category_for. Rename categories>keywords.
Clarify import output.
Import keywords for matko events.
Removed redundant tprek location import code.
Merge commit 'a9f64d2c8f4102cb7806390b7c214f1771247790'

Also added simple client HTML for API event search

Conflicts:
	linkedevents/settings/base.py