Changes:
- meaningfull errormessages when ex- and passive members try to login or to recover lost password
- bags of different types are now possible. Forms and ordering. etc autimatically adapt to the new bags.
Database updated to contain "bag" field (Y = bag) and sortfield to maintain wanted ordering of bags.
AJAX and handout forms updated. Members change of own orders are adapted. Administrators creation and deletion of bag-dates and deadline-dates are updated.
Merge pull request #13 from kbhff/multiple_bags

Changes: