Version Control With Subversion Source

* www/index.de.html
- Updated banner bar and print status.

* src/de/book/appb-svn-for-cvs-users.xml
* src/de/book/ch00-preface.xml
* src/de/book/ch01-fundamental-concepts.xml
* src/de/book/ch03-advanced-topics.xml
* src/de/book/ch04-branching-and-merging.xml
* src/de/book/ch05-repository-admin.xml
* src/de/book/ch06-server-configuration.xml
* src/de/book/ch07-customizing-svn.xml
* src/de/book/ch09-reference.xml
* src/de/book/copyright.xml
* www/index.de.html
- Merge in changes from English version from revision 3287 to 3306
(en-1.5-final).

* ru/book/ch-branching-and-merging.xml: essential fixes of stylistics

More website updates.

* www/old-versions.html
Put 1.4 versions on this page, add Safari button, and tweak header line.

* www/index.en.html
Tweak Safari button destination URL and header line formatting.

* src/de/book/foreword.xml
* src/de/book/ch01-fundamental-concepts.xml
* src/de/book/ch02-basic-usage.xml
- Patch of Jens Seidel
- fixed typos.

* src/en/book/ORPHANED-TOPICS
Lose this -- we cover project layouts and importing in other places.

Update svnbook homepage to show tagged 1.5 version (among other things).

Prime book for 1.6 coverage.

Add en 1.5 placeholder directory.

Tag 1.5 version of the English book (also known "Version Control With
Subversion, second edition", or "ISBN 10: 0-596-51033-0", or "ISBN 13:
9780596510336", or "Pilato's Bane", or ...)