* bantu/ticket/8713:
[ticket/8713] Update untrimmed_variable() doc block.
[ticket/8713] Revert changes to ucp_profile, ucp_register and acp_users.
[ticket/8713] Trim password in auth_db to keep compatibility.
[ticket/8713] Call htmlspecialchars_decode() on transfer (e.g. ftp) passwords.
[ticket/8713] Rename untrimed_variable() to untrimmed_variable().
[ticket/8713] DRY: variable() and untrimed_variable() into a protected method.
[ticket/8713] Fix type_cast_helper.php doc blocks: Add punctuation etc.
[ticket/8713] Always trim array keys.
[ticket/8713] Add simple (non-nested) test case for untrimmed set_var().
[ticket/8713] Use \t in double quotes instead of tabs.
[ticket/8713] Use correct parameter for nested data.
[ticket/8713] Adjust test method name to other recursive_set_var() tests.
[ticket/8713] Do not trim login inputs