Added the focus trigger to non hover popovers so that they close when
they lose focus.
Also added a 500ms delay to hiding the hover triggered popover to give
time for clicking on the contents.
The markup in the filemanager_fileselect template was being escaped,
causing a help icon not to display.
Additionally, the popover for the help icon was not display since
"loader.js" was not properly delegating the popover calls.
Ryan Wyllie