Adds client verb to access the character setup screen from anywhere.
Moves name validation to species level, making it possible for IPCs to have numbers in their name.
Adds gender validation, also adds support to add neuter/plural genders in the future if ever desired.
Now sanitizes preferences before applying them to a mob.
Fixes#11433.
(cherry picked from commit e40246e9dfc9feb28b8c5a0a7ce765fd063c4f7e)
Begins breaking down the large character setup in more manageable modules, allowing for easier additions, edits, and removals.
(cherry picked from commit e116721977)
Conflicts:
code/modules/client/preferences.dm
code/modules/client/preferences_savefile.dm
polaris.dme
