Replace customer specific logo with an opengever logo.
Revert "Drop latex listing adapters in favour of good old basic classes."

This reverts commit abbf657af675194370d4e79caab6b02ec71670a2.

Conflicts:
	opengever/latex/listing.py
Task transporter tests: Commit pending transaction in order to avoid

StorageTransactionError: Duplicate tpc_begin calls for same transaction.
See https://github.com/4teamwork/opengever.core/pull/556
Task: Use dates instead of datetimes when setting fields in ActionSucceeded subscribers.

`expectedStartOfWork` and `date_of_completion` are Date fields, not DateTime.
And so are the corresponding columns in SQL.
Fix indentation for development-packages.
Update doc-properties when moving/copying documents.
Update DocProperties after document checkin/checkout.
Create journal entry when updating/adding doc properties.
Remove duplicate readme entries, improve readability.
Update history.