Issue 2749-Add Abandoned Status to Works

Issue: Add Abandoned Status to Works (http://code.google.com/p/otwarchive/issues/detail?id=2749)
-added "status" attribute to works table
-if posting oneshot, status is automatically complete
-if work's expected number of chapters != chapters, option is given to select either "wip" or "abandoned"
-status is displayed in the work header
-image is changed (temporary image is ellipses on gray/black bg)
-added to symbols key

Recommitted changes 11/05/12:
-fixed abandoned-status on tags_helper
-changed styling on status box
-status box will now show up when posting works for the first time

NOTE: The current image is a placeholder image that's there to test the backend and is subject to change.