[#3602064]Check FmFolderView itself if it has the focus on hotkeys.

It appears not only children may have a focus but widget itself as well.
[#3614965]Fix crash on removing last item from expanded node in dir tree model.

If no_child_non_expandable is set then children will be NULL.
Commit from LXDE Pootle server by user kizito.: 351 of 352 strings translated (0 fuzzy).
[l10n] Sync PO files on disk for Pootle.
Commit from LXDE Pootle server by user LStranger.: 276 of 378 strings translated (45 fuzzy).
Commit from LXDE Pootle server by user LStranger.: 295 of 378 strings translated (35 fuzzy).
Commit from LXDE Pootle server by user brother.: 378 of 378 strings translated (0 fuzzy).
[l10n] Minor change to sv.po.
Corrections for some Translatable strings.
[l10n] POT file update.
[l10n] Sync PO files on disk for Pootle.
[l10n] Sync PO files on disk for Pootle.
Commit from LXDE Pootle server by user brother.: 379 of 379 strings translated (0 fuzzy).
Commit from LXDE Pootle server by user LStranger.: 296 of 379 strings translated (35 fuzzy).
Commit from LXDE Pootle server by user LStranger.: 379 of 379 strings translated (0 fuzzy).
Commit from LXDE Pootle server by user sotrud_nik.: 379 of 379 strings translated (0 fuzzy).
Add missing G_LOCK(query) in folder idle call.
Commit from LXDE Pootle server by user JSonic.: 379 of 379 strings translated (0 fuzzy).
Commit from LXDE Pootle server by user JSonic.: 379 of 379 strings translated (0 fuzzy).
Merge branch 'master' of ssh://pcmanfm.git.sourceforge.net/gitroot/pcmanfm/libfm