New: Increase usability of module project.

ChangeLog

htdocs/core/class/html.form.class.php

htdocs/core/lib/project.lib.php

htdocs/projet/activity/list.php

htdocs/projet/class/task.class.php

htdocs/projet/ganttchart.php

htdocs/projet/ganttview.php

htdocs/projet/note.php

htdocs/projet/tasks.php

htdocs/projet/tasks/contact.php

htdocs/projet/tasks/document.php

htdocs/projet/tasks/index.php

htdocs/projet/tasks/note.php

htdocs/projet/tasks/task.php

htdocs/projet/tasks/time.php

htdocs/theme/eldy/style.css.php