the report handler for xlsx added over here is always returning `true` even if the report being
generated is not xlsx. Due to this, the report handler doesn't check for other report types
at b309d3a99f/addons/web/static/src/webclient/actions/action_service.js (L1019)
and thus doesn't generate any other reports. So if the converter is not xlsx, return false instead of true.
Also, updating the docids and context in the report_routes controller only needs to be done if
the converter is xlsx and not in any other case.
Before this commit, when exception is raised while generating report,
on browser window instead of python traceback nothing was shown
on production environment or werkzeug's "Console locked" message
on development environment.
