Falocalrepo

Changes

* Add `json` and `columns` options to database search commands to output results in JSON format

Fixes

* Fix zero-padded ID's not being matched by search commands
* Fix possible output error during single submissions download

Fixes

* Fix output error in `download submissions` command

Fixes

* Catch `NoSuchProcess` exception when checking for other instances of falocalrepo

Fixes

* Fix incorrect call to database merge

Fixes

* Fix printing of users search results

Changes

* Add `database upgrade` command, do not upgrade automatically
* Check database version and stop if major or minor do not match with falocalrepo-database

Fixes

* Fix `database add-user` folders error

Dependencies

* falocalrepo-database dependency set to [\~4.9.4](https://pypi.org/project/falocalrepo-database/4.9.4)
* Solve issue [6](https://gitlab.com/MatteoCampinoti94/FALocalRepo/-/issues/6)