Documentation of the DailyReport Use Case

Completed code documentation of the following class:
Application Level
- application.ini
- Bootstrap.php
- Client.php
DailyReport Use Case
- DailyController.php.

Source still to document:
- daily/index.phtml
- daily/createmail.phtml

Note: For some reason the changes to the Client.php are not showing up with diffs. This may be because the line numbers of existing code have changed quite a bit.