Update Chash to Chamilo 1.10 structure

[ywarnier]

There are a few things that need to be taken care of:

• the configuration file is now in config/configuration.php instead of main/inc/conf/configuration.php
• the archive directory moved, so the clean_archives command is probably not working anymore with this version

Make sure chash supports 1.9 AND 1.10 at the same time (once we're in production with 1.10, we'll probably get rid of support for 1.9 in Chash as there are very few users using it).

[jmontoyaa]

We can't get rid of Chamilo 1.9, because we do the upgrade progress. We need to identify "old" installations.

[ywarnier]

We could assume that, as soon as it contains a config/configuration.php file, it's a 1.10, right?
When upgrading from older versions, we shouldn't have 1.10 files until we start the migration, so Chash can easily be aware of that.

[ywarnier]

I have modified chash to support 1.10.* versions and 2.0 version

[rheribi]

Hello ! how are you Ywarnier ! thank you for all your efforts !
I need your help ! I want to extract the code of exercices ! and integrate it into my own project ! I am beginner framework in silex framework , and I don't know wath to do exactly ! sorry for my bad english