Ultimaker merged with an endstop Holders

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[>>>] Generating Attributions log:

[0] Thing Title : Z endstop telescopic adjustable mount
[0] Thing URL : http://www.thingiverse.com/thing:60183
[0] Thing Author : infodude
[0] Thing Licence : Creative Commons - Attribution - Share Alike

[1] Thing Title : E3D hot end smallest mount / J-head mount for the Ultimaker
[1] Thing URL : http://www.thingiverse.com/thing:159987
[1] Thing Author : MoonCactus
[1] Thing Licence : Creat