If update_first is False make it first wait and then update
If update_first is False make it first wait and then update

Reason: otherwise it is likely that two updating processes are being run
simultaneously. With the current code it is not impossible as well, but less
likely.

seanfisk/powerline,darac/powerline,prvnkumar/powerline,areteix/powerline,DoctorJellyface/powerline,IvanAli/powerline,seanfisk/powerline,bezhermoso/powerline,magus424/powerline,bartvm/powerline,s0undt3ch/powerline,keelerm84/powerline,junix/powerline,Luffin/powerline,kenrachynski/powerline,magus424/powerline,EricSB/powerline,wfscheper/powerline,xfumihiro/powerline,xxxhycl2010/powerline,lukw00/powerline,Luffin/powerline,lukw00/powerline,cyrixhero/powerline,cyrixhero/powerline,IvanAli/powerline,areteix/powerline,s0undt3ch/powerline,xfumihiro/powerline,lukw00/powerline,EricSB/powerline,blindFS/powerline,S0lll0s/powerline,firebitsbr/powerline,seanfisk/powerline,magus424/powerline,Liangjianghao/powerline,xxxhycl2010/powerline,cyrixhero/powerline,dragon788/powerline,junix/powerline,DoctorJellyface/powerline,bartvm/powerline,xfumihiro/powerline,prvnkumar/powerline,QuLogic/powerline,dragon788/powerline,wfscheper/powerline,blindFS/powerline,S0lll0s/powerline,QuLogic/powerline,IvanAli/powerline,prvnkumar/powerline,darac/powerline,areteix/powerline,Luffin/powerline,russellb/powerline,firebitsbr/powerline,S0lll0s/powerline,Liangjianghao/powerline,junix/powerline,s0undt3ch/powerline,Liangjianghao/powerline,bezhermoso/powerline,darac/powerline,firebitsbr/powerline,keelerm84/powerline,bezhermoso/powerline,QuLogic/powerline,russellb/powerline,wfscheper/powerline,kenrachynski/powerline,blindFS/powerline,dragon788/powerline,DoctorJellyface/powerline,xxxhycl2010/powerline,kenrachynski/powerline,russellb/powerline,bartvm/powerline,EricSB/powerline