Start work in creating question tests. Form with fields for inputs.

lang/en/qtype_stack.php

questiontestedit.php

questiontestform.php

questiontestrun.php

renderer.php

stack/input/algebraic/algebraic.class.php

stack/input/boolean/boolean.class.php

stack/input/dropdown/dropdown.class.php

stack/input/inputbase.class.php

stack/input/singlechar/singlechar.class.php

stack/input/textarea/textarea.class.php