Merge branch 'terencehill/cl_eventchase_death_2' into 'master'

cl_eventchase_death 2 by default

* cl_eventchase_death 2 by default
* make the cl_eventchase_death checkbox toggle between 0 and 2

For a quick reference: seta cl_eventchase_death 2 "camera goes into 3rd person mode when the player is dead; set to 2 to active the effect only when the corpse doesn't move anymore"

See merge request xonotic/xonotic-data.pk3dir!787