This 1.48.2 release really fixes the bug when re-submitting jobs
that weren't submitted in first place.
The release also improves testjobs page load times and mainly it improves
load time of home page.
Complete list of changes going in:
* ci:
* backend: lava undo resubmit on unsubmitted job
* models: really re-submit unsubmitted jobs
* frontend:
* ci: avoid re-checking if user can submit
* ci: lazy-load testjob definition
* ci: remove unecessary queries
* ci: support changing number of jobs per page
* templates: testjobs: avoid query for perent jobs
* views: improve home page load time