Assuming title is always available in collections

[fredliporace]

@kbgg congrats on this awesome project!

I'm tinkering with it to submit a PR to include the CBERS stac api server, and noticed that the browser assumes that title is always available for collections, more specifically here:

qgis-stac-browser/controllers/query_dialog.py

Line 63 in e94b703

title = collection.title.replace("\n", " ")

This breaks if no title is available. Since this field is not currently required it would be better to use id if title is not available. This is what I did in my fork,