Make cli command options consistent: check only or fix (dry-run mode)

[sypets]

command	how it deals with checking vs. fixing
container:deleteChildrenWithNonExistingParent	fixes in any case, no dry-run mode
container:deleteChildrenWithWrongPid	fixes in any case, no dry-run mode
container:fixContainerParentForConnectedMode	fixes in any case, no dry-run mode
container:fixLanguageMode	fixes in any case, no dry-run mode
container:integrity	only checks and reports problems, no fixing
container:sorting	only fixes if option --apply is passed, default is dry-run
container:sorting-in-page	only fixes if option --apply is passed

Suggestion

• Be consistent on behaviour of command without option (currently, sometimes it fixes without option, sometimes with option).
• Always make it possible to differentiate between automatical fix or check (dry-run). Sometimes it is useful to only report problems and check them first or fix manually.

Personally, I find using an option such as --dry-run (-d) more obvious and consistent with other commands.