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TH-1731 Make hovertips for navigator and item-level icons configurable by domain admins
TH-1299 Change bottom tool-icons: add 
+ should only show when in slideshow, move delete 
- over next to info 
i
TH-1730 Icons: change upload icon to match the other bottom icons.
TH-1717 Domain statistics: "Number of Images" should be "Number of files".