Fix bugs, clean up extension, add minor features

Fixes and updates:

- Update Direct Deposit/BPay to use observers
- Fix errors in Direct Deposit code
- Fix postcode autocomplete
- Update styling of payment methods and postcode autocomplete
- Remove erroneous element from eParcel records array
- Add email notification field to eParcel consignments
- Fix eParcel import functionality
- Improve eParcel settings for greater flexibility
- Refactor several classes and XML files
- Various minor bug and spelling fixes

General cleanup:

- Add licence and updated year in licence headers to 2014
- Normalise line endings
- Move ACL configuration settings into adminhtml.xml
- Relocate layout XML files and skin assets
- Remove unused methods