Book: Changed DCACHE_VERSION in master to 2.8

Target: master
Squashed commit of the following:

commit fe26d4b3f8417b9986980158f0b399ae1706de93
Author: Antje Petersen <antje.petersen@desy.de>
Date:   Tue Sep 17 14:34:03 2013 +0200

    Book: Added chapter about WriteToken.

    Target: master

commit 6d20af9e8f93588555c6abafbc9d2abdb1b3a2f0
Author: Antje Petersen <antje.petersen@desy.de>
Date:   Tue Sep 17 14:31:59 2013 +0200

    Book: Added config-write-token.xml to config.xml

    Target: master
Book: Substituted old properties and old services by the new ones.

Target: master
Book: Added chapter about WriteToken.

Target: master
Book: Substituted old properties and old services by the new ones.

Target: master
Book: PoolManager: wrandom

Added info about wrandom partition.

Target: master
Merge branch 'partition-type-wrandom'
Book: Book: chimera - write token tag

Added info about the write token tag to "Directory tags for dCache".

Target: master
Book: Billing: insert properties

new insert properties

Target: master
Merge branch 'new-billing-properties-for-insert'
Book: intro: protocols

Added info about protocols.

Target: master
Book: intouch: dcap.authz.anonymous-operations

Added info about anonymous access with dcap.

Target: master
book: Update documentation to use new chimera CLI utility

Target: trunk
Acked-by: Paul Millar <paul.millar@desy.de>
book: Document latest space manager changes

The entire chapter should be rewritten, but for now this patch
updates the chapter to be consistent with the changes made in
dCache 2.8.

Target: trunk
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/6417/
book: Update description of link groups

Removes description of unused link group attributes, misuse of
camel case, and wrong tagging of terms as literals. Also updates
some of the descriptions to be a bit more precise.

Target: trunk
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/6419/
book: remove wrandom partition

Acked-by: Gerd Behrmann
Target: master