refs #62 - added the BillOfLading and migrations.

Build should not break because of these changes. For production,
we need to run `rake 21nautica:fix_bl_number`
refs #61 - Added extra fields to Movement

Now, when a BL is added, it gets associated with the
movement objects.
refs #63 Added BL payment module.
refs #64 Added the Import Expenses module.
refs #64 - Fixed import expenses (properly)
refs #64 minor changes for import expenses

added placeholder for dates
Correct Haulage and Demurage diasbled field values