Add multilanguage support for 2-Advanced

[devplanete]

Add lang folder with translation file for English and French.
You can simply add new language by translating content of the "lang\en.php" into another language.

In php-login.php, I have added a function to detect user language and to load the translation file if available (english otherwise).

I have modify all the views files to have a HTML header (because utf8 characteres are not well displayed without utf8 header).
I have removed php-login pub from generated html. For security purpose, it's not a good idea to show the login script that you web site is using...
I have merge password_reset_new_password.php and password_reset_request.php into only one file password_reset.php

[panique]

Once again, good stuff! But I think those tranlation string should be constants, not variables. I'm not sure here, but a variable can change during app runtime, a constant always stays the same. But a lots of similar-named constants might look strange... Hmmm... I will read into the topic a little bit more.

Also, I totally agree that to remove the script naming in the views!

Big thanks.

By the way @devplanete, are you french/canadian and a native speaker ? (I have a french-sounding avatar name, but only speak a little bit french, far away from being able to check french translations ;) )

[devplanete]

@panique I'm french from France so I think that my translations are good ;)

I always use a simple php array to store translation strings. I don't know if it will be a real difference for php if we use constants.