add log in page
Added:
	get_set_value for PendingEvent and PendingEventValue
	tests for these functionalities
Modified:
	tests for templating

param must not be modified anymore (use param.set_value() instead)
Merge branch 'BOM' of github.com:Neamar/kingdoms
Add migration for trigger slug
Update test for slugs
PEP8
Add tests for variables access
Add get_value to PVA
Merge branch 'master' into front
Merge branch 'hugo' of github.com:Neamar/kingdoms into front
Refactor code organization for api
Refactore code organization, add serializers
First draft for serializers
Refactor login
Update templates
OneToOne for kingdom
Automatically handle dates
Serialize missions