[Bugfix] PostgreSQL typname can be _text
[Bugfix] PostgreSQL typname can be _text

Fix Undefined index: _text in /srv/lzm/lizmap/modules/lizmap/lib/Form/QgisFormControl.php 201

When jelix retrives PostgreSQL fields info, the jDbFieldProperties type value comes from pgtype.typname and can be _text for text.

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