Change the default collation to be consistent with the DB definition.

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@1156 a333f486-631f-4898-b8df-5754b55c2be0

core/config.class.inc.php

@@ -39,7 +39,7 @@ class ConfigException extends CoreException
 }
 
 define ('DEFAULT_CHARACTER_SET', 'utf8');
-define ('DEFAULT_COLLATION', 'utf8_general_ci');
+define ('DEFAULT_COLLATION', 'utf8_unicode_ci');
 
 define ('DEFAULT_LOG_GLOBAL', true);
 define ('DEFAULT_LOG_NOTIFICATION', true);