[tools] Add custom gvim settings for nicer writing

Wrap gvim in a tool called 'write', provide some distraction free
settings and add some environment options to add completion for this
tool.

TODO: Integrate with fabric
[tools] Add a write wrapper to edit drafts

A wrapper around the write tool, called draft, which offers completion
only for articles that are marked as draft.
[tools] rename writer tool and document process
[article] Destination Zurich
[article] The Quest For Subcommands (Part II)
[tools] source the environment automatically