Edoc fixes for readable HTML generation

* Fix vertical whitespace and code formatting in module doc string (particularly noticeable in the wm modules)
* Some textual improvements to same
* Various fixes to `@see/@link`:
  * Separate `@see` from `@doc`
  * Replace `@see` with `@link` where appropriate
  * Fix cross-references to other Riak applications
  * Drop `@see` where it isn't actually part of edoc

* UTF-8 encoding for files where Nuno Preguiça is referenced in edoc strings so rendered properly
* Fix URLs in edoc strings (require [] for URL-ification)
* Various grammar fixes
* Replace "" and '' with `' where appropriate
Yeah, I'm thinking the cost of cluttering up the comments for future code readers probably higher than the value of having it be monospace on the webpage.

Sent from my iPhone

> On Aug 15, 2014, at 2:35 PM, Sean Cribbs <notifications@github.com> wrote:
> 
> In src/riak_kv_mrc_pipe.erl:
> 
> > @@ -20,7 +20,7 @@
> >  
> >  %% @doc Riak KV MapReduce / Riak Pipe Compatibility
> >  %%
> > -%% == About using `{modfun, Mod, Fun, Arg}' generator to a MapReduce job ==
> > +%% == About using {modfun, Mod, Fun, Arg} generator to a MapReduce job ==
> No worries, doesn't seem critical.
> 
> —
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