OP-324 download progress reporting on the 'remote version' table
OP-324 better UX around downloading updates. Page is now auto refreshed once download is complete.
OP-324 CSRF protection against all the download and install actions for the update manager
OP-324 Cleaning up temporary download files once preside version has been downloaded and unpacked
OP-329 Tentative commit: migration script execution for upgrades and downgrades
OP-329 Making migration script running actually work
Bumping the version number to reflect new feature added