Change download hover text

Problem

Wether a file opens in the browser or is downloaded depends on the file format and the browser configuration (type, addons, etc) of the user. Currently the text "Open file in a new window" is used which gives a user the expectation of seeing the file in a new window even if this is not necessarily the case.

Solution

Change the text to "Open or download file". This properly sets the expectation of the user and provides room for the various scenarios in the browser.