..logbook.*: updating javadocs, fixing dialog title and visibility

Change-Id: I66ccd657b25889829e52f6b5507fd35d8dc4a190
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..logbook.ui: cleanup AttachmentBuilder

Change-Id: I1735d5cef68c65462bfac38cb8b8440f54e6951c
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
Merge branch 'logbook' of git@github.com:ControlSystemStudio/cs-studio.git into logbook