Fix forgotten languages
Fixes #888 rebuildsettings() should be removed.
Update standards
Implements #889 find_replace_templates() should accept a template SID
Update $options comment
WIP #882 Add more hooks v2

Add hooks to the login data-handler.
WIP #882 Add more hooks v2

Fix hooks in the login data-handler..
add forgotten semicolons :|
Implements #893 Add get_user_by_username() helper function.
Updates #893 commits