Merge branch 'Melanosuchus/vote_caller' into 'master'

Store the name of the vote caller

If only the entity of the caller is stored, there can be some inconsistencies.

Example: If a player leaves the server after calling the vote, the result will show an empty name.

This branch fixes such inconsistencies, while the normal flow isn't affected.

(ie: Votes from the server still show the correct name and if a player changes their name, messages will show the new name)

See merge request !127