delete kontact-admin docbook
Review Request #129561 - Created Nov. 26, 2016 and submitted
remove kappname + packages, no longer used
bump date + releaseinfo
remove "Outlook compatible invitation reply comments", I could not find it in the code
remove empty chapter Common Problems
There is not much content in this docbook and parts of these options are already in the kmail handbook.
Maybe we should move everything into the kmail/kontact docbooks are and delete this docbook?
delete doc/kontact-admin directory and adapt doc/CMakeLists.txt
valid content of kontact-admin docbook is added to kontact docbook, see https://git.reviewboard.kde.org/r/129629/
Revision 2 (-362)