[BUGFIX] Transparency issues when printing
[BUGFIX] Transparency issues when printing

Fixed #749 an issue with QGIS Server GetPrint layers order

rldhont/lizmap-web-client,3liz/lizmap-web-client,3liz/lizmap-web-client,nboisteault/lizmap-web-client,rldhont/lizmap-web-client,laurentj/lizmap-web-client,rldhont/lizmap-web-client,3liz/lizmap-web-client,laurentj/lizmap-web-client,nboisteault/lizmap-web-client,laurentj/lizmap-web-client,laurentj/lizmap-web-client,nboisteault/lizmap-web-client,rldhont/lizmap-web-client,nboisteault/lizmap-web-client,3liz/lizmap-web-client