First version of resource module

class/actions_resource.class.php

class/html.formresource.class.php

class/resource.class.php

core/ajax/resource_action.json.php

core/modules/modResource.class.php

core/tpl/resource_add.tpl.php

core/tpl/resource_view.tpl.php

element_resource.php

index.php

js/fullcalendar/fullcalendar.css

js/fullcalendar/fullcalendar.js

js/fullcalendar/fullcalendar.min.js

js/fullcalendar/fullcalendar.print.css

js/fullcalendar/gcal.js

langs/en_US/resource.lang

resource_planning.php

resource_timeline.php

sql/llx_element_resources.sql