Moar updates

- modified:   .gitmodules
- modified:   bundle/airline
- modified:   bundle/python-mode
- modified:   bundle/rest
- modified:   bundle/signify
- modified:   bundle/startify
- modified:   bundle/supertab
- modified:   bundle/syntastic
- deleted:    bundle/vim-fugitive
- deleted:    bundle/vim-markdown
- modified:   bundle/vim-over
- modified:   bundle/vinegar
Added back fugitive and markdown

- removed them temporarily to change their names in `bundle` dir