getMachineCenterCoords: change erroneous getMachineSetting>>Float<<

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extra : source : 0a5525f40003b9b7ef1f01bc0d1ad4ec6c954c31
Merge pull request #567 from hg42/fix-rostock-machine-center

getMachineCenterCoords: change erroneous getMachineSetting>>Float<<
Add proper head sizes for the Ultimaker2.
Merge branch 'SteamEngine' of github.com:daid/Cura into SteamEngine
Add option to add/remove machines from machine setting menu.
Update translation files and add update script.
Merge
change exec mode of desktop file
fix parentheses