adding osm short for OpenStreetMap without linking it
adding new scripts to create sphinx env and reduce image size

Signed-off-by: Werner Macho <werner.macho@gmail.com>
reducing images size with (hopefully) no visible change by 80MB

Signed-off-by: Werner Macho <werner.macho@gmail.com>
make QGIS 2.6 default

Signed-off-by: Werner Macho <werner.macho@gmail.com>
update to docs,translations

Signed-off-by: Werner Macho <werner.macho@gmail.com>
add new translations and files

Signed-off-by: Werner Macho <werner.macho@gmail.com>
merge pull request

Signed-off-by: Werner Macho <werner.macho@gmail.com>
compressing images

Signed-off-by: Werner Macho <werner.macho@gmail.com>
fixing up the beginner curriculum