Can't move vertices and bones anymore I think I made some mistakes and now I can't move my stuff anymore.

I uploaded a blend file so you may could tell me what I have done wrong and next time I will be able to fix the problem by myself.

Link to blend file:
https://www.dropbox.com/s/7l1tb5v2g0lpyzs/character.blend?dl=0
I looked at your file. As @Denis stated: You activated Snapping, the little orange horseshoe. Just disable it using Shift+Tab, and you can move the bones around again.