Added some Subversion properties in order to integrate version control with the issue tracking system. Some sophisticated SVN clients e.g. TortoiseSVN or Subclipse will show issue ID's and make link to the issue tracking URL in the log messages and ask for a ticket number when commiting. A ticket number is now asked which can be ignored.

- Lazy connections possible through Doctrine_Manager::addDSN($dsn, $connectionName). Connections will then be opened automatically when they are requested the first time.

Changes concerning multiple connection control:
- injection of the Connection object into the Doctrine_Table constructor, instead of a static lookup.
- added optional Connection parameter to save/delete of Doctrine_Record and Doctrine_Collection

refs #62 - beginning of test case NOT COMPLETE - I haven't got the testing framework running on my machine yet

fixes #92 and reverts a function name change I did for no reason (and third test of post-commit script...)