Update index.html

Updated table of contents link and link description from `update_user()` to `update()` to properly reflect actual class name.
Removed free_result call on num_rows()

free_result() should not be called with running num_rows() since you will want to return the query after that if there are records.

Resolves issue #593
Updated database loading in the controller (via Debjit Saha <debjitsaha87@gmail.com>)
Merge pull request #650 from sparky672/patch-2

Update index.html
Major update of the French translation in ion_auth_lang.php :
- Add $lang['login_timeout'] line in Login / Logout
- Add Groups lines
- Add Activation Email lines
- Add Forgot Password Email lines
- Add New Password Email lines
With the same schedule as in the English file
Minor
Minor
Merge pull request #652 from dev-ggallon/feature/full_french_translation

Major update of the French translation in ion_auth_lang.php
Allow arrays in add_to_group
Merge pull request #654 from simonda86/allow_arrays_in_add_to_group

Allow arrays in add_to_group