In Vim, set file-type specific options within tabs

To achieve this, the filetype plugin is used to load the settings from
the appropriate file in files/vim/ftplugin. The files/vim directory must
be added to the runtime path; this is done in the link template, so this
update requires deploy.py to be re-run.
In Vim, wrap commit messages to 72 and spell-check
Reorganise vimrc slightly
Merge branch 'master' of github.com:Fodaro/.dot