Merge branch 'LOViewer' into 'master'

Add LibreOffice Viewer

Libreoffice Viewer for android is out in a beta form http://blog.documentfoundation.org/2015/01/21/libreoffice-viewer-for-android/

This needs some tarballs to build... all of them are in the git repo that i added to "srclibs".

To build this in my laptop i needed:
libdbus-glib-1-dev
libgconf2-dev
libxt-dev
python3-dev
libxslt1-dev
libarchive-zip-perl

Maybe there are some other dependencies, but i cant search for them this week

See merge request !519