Add Travis CI support
GRRR!
Try harder to get Qt5 on travis
We apparently need this to silent aclocal
We really need xsltproc, don’t pretend otherwise
No C++11 support in travis!

Just give up for now.
Make the README less out of date a bit

It still needs to be extended a bit.
Remove some obsolete TODO entries
Drop obsolete file
Those have not been updated for long
No idea what this file is for