[kbackup] /: Few fixes for translations (and translated doc)

[Luigi Toscano]

Git commit f81d99d30d549b5d61614aaba3ffbc30d980910e by Luigi Toscano.
Committed on 04/01/2018 at 23:34.
Pushed by ltoscano into branch 'master'.

Few fixes for translations (and translated doc)

- set Your names/Your emails as properties for KAboutData, according
  the guidelines;
- remove the translated po and the translated docbook, which will be
  copied to the translation repository (docbooks are going to be
  converted to po files);
- add a proper Messages.sh;
- add the macro for the installation of translated artifacts, which
  will be injected using releaseme at release time;
- fix the DTD used for the English documentation.

M  +3    -1    CMakeLists.txt
M  +0    -3    doc/CMakeLists.txt
D  +0    -1    doc/de/CMakeLists.txt
D  +0    -719  doc/de/index.docbook
D  +-    --    doc/de/mainwindow.png
M  +1    -1    doc/en/index.docbook
D  +0    -1    doc/fr/CMakeLists.txt
D  +0    -770  doc/fr/index.docbook
D  +-    --    doc/fr/mainwindow.png
D  +0    -1    doc/ru/CMakeLists.txt
D  +0    -611  doc/ru/index.docbook
D  +-    --    doc/ru/mainwindow.png
D  +0    -26   po/CMakeLists.txt
D  +0    -47   po/Messages.sh
D  +0    -741  po/cs.po
D  +0    -767  po/de.po
D  +0    -740  po/es.po
D  +0    -761  po/fr.po
D  +0    -747  po/ia.po
D  +0    -750  po/it.po
D  +0    -602  po/kbackup.pot
D  +0    -756  po/pt.po
D  +0    -758  po/pt_BR.po
D  +0    -760  po/ru.po
D  +0    -748  po/sk.po
D  +0    -749  po/sv.po
A  +4    -0    src/Messages.sh
M  +1    -0    src/main.cxx

https://commits.kde.org/kbackup/f81d99d30d549b5d61614aaba3ffbc30d980910e