discourse/discourse — pull request #2034 by birarda (2014-02-28 19:37:42+00:00)
Title: allow for custom username length via site setting

SiteSetting.min_username_length and SiteSetting.max_username_length allow changing of min and max length for local usernames.

Note: the custom lengths are not considered and the default is used if `enforce_global_nicknames` is true