improve centreon kb

www/api/class/centreon_wiki.class.php

...istration/parameters/knowledgeBase/formKnowledgeBase.html

...e/configuration/configKnowledge/display-hostTemplates.php

www/include/configuration/configKnowledge/display-hosts.php

...onfiguration/configKnowledge/display-serviceTemplates.php

www/include/configuration/configKnowledge/functions.php

...ude/configuration/configKnowledge/templates/display.ihtml