Disable Shutdown prompt or solve it that it won't show Shen shutting down my computer, I see a prompt with information that another user is logged in and that this user could lose data when I shutdown computer:



I am almost certain it's because I installed OS X Server and I connected to it with Xcode. I have it on my MacBook for work. How can I fix this? What causes this, and have I set something wrong? I just don't want to write my credentials everytime I want shutdown the computer but I don't want to lose any data.
this user could loose data 


Then they had better tighten the data up.


  when I shutdown computer


Don't. Just close the lid. If it is plugged in, background processes (like XCode compilation) will still run. If not, it's their problem and if it is XCode that particular process will simply fail and get processed elsewhere.

There is really no need to shut down a Mac daily. Mine only get powered down for disassembly-level maintenance, and only get rebooted for updates.