Show new created file instantly in folder.

There is a bug in GIO: inotify update is delivered to monitor with
1 second delay. This commit adds a workaround: the notify is pushed
internally therefore view will be updated instantly. When monitor
delivers addition in 1 second, FmFolder will do file info update instead.
It is not a big overhead and price for the convenience.
Commit from LXDE Pootle server by user jay.: 371 of 379 strings translated (6 fuzzy).
Merge branch 'master' of ssh://pcmanfm.git.sourceforge.net/gitroot/pcmanfm/libfm
Commit from LXDE Pootle server by user jay.: 371 of 379 strings translated (6 fuzzy).
One more note for translators: about "_Trash" is a verb.