[sailfish-office] Add name, date and type sort in file list. Fixes JB#47911

[mphilippov-omp]

• Added a dialog which allows user to select sort parameter: name, type or date

• Added user, name and date sort for file list items

[pvuorela]

One more thing: the name sortings could be better case insensitive.

[mphilippov-omp]

One more thing: the name sortings could be better case insensitive.

Done

[pvuorela]

LGTM