This replaces the previous Docs.exampleBaseUrl JS-side option, which
was a bit of a hack.

Now all URL-s are prefixed in parsing stage, so the docs app doesn't need
to deal with the prefixing at all.

Additionally the externalUrl field in examples.json is no more supported.
Simply using the url field beginning with http:// will do the trick.

Previously it only worked inside members section.

Using the available context, changing @deprecated implementation to
say the correct type of item that is deprecated.

Styles had gone completely missing in print view.

HTML for TOC has now nice newlines.

For each guide a TOC is created from all H2 headings.

A bit of twaking to get linking to those sections working.  So one can just refer
to each section from within the guide or from outside of it like so:

    #!/guide/guide_name-section-3

Like first full matches for public, then full matches for private,
then beginning matches for public, then beginning matches for private.

To keep code simpler, the name of the class implementing the logic
is saved to the setting.

Instead of hiding all private classes, now only those that have
no non-private subclasses get hidden.

This way we can also easily remember the state of showPrivate
when switching between logics.

The warning type :link_private is now gone.

It made sense to warn about such links when we had no private members included
to docs. But now we can freely link to private ones too.

Moving toolbar to the top caused a regression of the bottom part of inline
example being cut off.  The toolbar was taken account when displaying code
editor, but not for the preview itself.  This probably wasn't noticable
when viewing ExtJS examples, but in Touch it's quite apparent.

The important thing is for public members to be documented.

--ignore-global now only toggles between showing global class or hiding it.

--warnings=-global turns warnings about global members on/off regardless of
the previous option.

Printing of the warnings is also no more duplicated in both lint.rb and app.rb.

Class#all_members and Class#all_local_members no more filter out private members.
Small refactoring inside Class to avoid confusing use of all_members as local
variable.

No more does it return only public members.

Copy-paste colors from: http://yuilibrary.com/yui/docs/api/

Avoids double-negations to have show:{public:true} than hide:{public:false}.

Filtering class members now also applies the filter to menus.
For this the field is now aligned right - otherwise it'll jump on
every character typed to the field as the member counts change.

So we can now toggle public/protected/private separately.

A bit experimental for now, but seems to work well.

:private is injected to :meta hash when data is exported for use in Docs app.
Inside there it's treated as just another meta-tag.

The fourth argument to compare is an optional file listing
class#method names to ignore. Like so:

    Ext.Element#fly
    Ext.lib.Container#beforeremove

Would be better to get completely rid of the hard-coded offset.

For now the buttons have small text labels - have to come up with some icons.

Instead of two boolean settings, now saving one Object setting containing
two keys.

Hiding of accessors now also works in dropdown menus.

And the code is shorter & cleaner.

When private class happened to have a child node, the class wasn't
grayed out.