Update submodules
Added vim-unimpaired as a submodule
Added vim-sensible as a submodule
Remove editorconfig
Added vim-pathogen as a submodule
Load pathogen with vim, std name
Add vim-sensible

* Reorders XDG runtimepath so it's set before manually loading vim-sensible
* Source vim-sensible so we can override its settings
* Define undodir
* Remove Pathogen symlink in favour of same loading behaviour as vim-sensible
* Remove duplicated settings (that's the point isn't it?)

NB: add gitgutter and mkdir mapping
Silence bundle make task