Fix powerline separators not appearing

Just realised that I had left the separator-removal options active.
Uncomment those 2 lines for blocky separator goodness (when there are no
powerline-patched fonts available).

vim/settings/colorscheme-statusline.vim

@@ -50,5 +50,5 @@ set laststatus=2
 set noshowmode " don't show e.g. --INSERT-- with themed status lines.
 
 let g:airline_powerline_fonts = 1
-let g:airline_left_sep=''
-let g:airline_right_sep=''
+"let g:airline_left_sep=''
+"let g:airline_right_sep=''