Update Kate docbook to recent chnages in master
Review Request #124546 - Created July 31, 2015 and submitted
Follow code removal of plugins (kttsd, xmlcheck, pate, filetemplates, mailfiles)
Fix broken links
New main screenshots
thanks a lot for the update!
Looks better and it is good that the non-ported plugins are not longer mentioned. (if somebody starts to port e.g. pate, we can add that back again)