Just a quick note, all of the nations won't be correct with season start dates for example as I made it merely to win the league in that nation and carry on to avoid overlaps of time I set them all to the same start and finish dates.
If you're wanting exact alike season then please look elsewhere, if you want this then I've saved you a full day on the editor!
To install simply extract the files to:
My Documents > Sports Interactive > Football Manager 2014 > Editor Data
Create the "Editor Data" folder if it doesn't exist already.
Then start a new savegame using this database.