Inplace file path

Fixes Bug #11969 https://trac.openmicroscopy.org.uk/ome/ticket/11969
"Show File paths" now shows the target of the symlink, in case it is an inplace imported file.
To Test:
Select an inplace imported file and click on "Show File path". Make sure the path to the original file is shown and not the path inside the data repository.

Also fixes the problems mentioned in PR #2148
To Test:
Move the mouse over the inplace import icon, see if the tooltip stays open long enough, to comfortable read it, make sure that clicking on "Show file paths" in the tooltip will show the same as clicking on "Show file paths" in the toolbar.