OPEN - task #201: logbook history support

adding adapter for logentries to pv's using a regex defined in
preferences

Change-Id: I7bc71bd588444a8c656e68c5a3fea61a8b0e8477
OPEN - task #246: Shift service integration 
http://github.com/ControlSystemStudio/cs-studio/issues/issue/246

Adding property support for integration with shift service

Change-Id: Id468ef49117e1c00c97505b68ead17b0a058e79a
Merge pull request #258 from eschuhmacher/logbook

Client for Shift service
Merge branch 'logbook' of https://github.com/ControlSystemStudio/cs-studio into logbook