Fix powerline green status bar issue
Stop using nose as compiler for python

The nose vim-plugin was already deleted in SHA: 58a379f6765dff7ba91b102d68812a4def9f8f3e
Remove command-t configuration

The command-t vim-plugin was deleted in SHA: 937860cc6fe7218c4fcbbc6ff82bdd403e43a9e4
Correct spelling in comments