Make vim and ipython ext configurations optional
Make vim and ipython ext configurations optional

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