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.

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.

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.

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.

A strange case where IE9 behaves worse than IE7 and 8.

Created Docs.ClassRegistry for doing the mapping.

The error-handling code had gone out-of sync with the rest. The
Index controller had been renamed, and so error handling failed.

Now there is a separate Failure controller.

In addition to Classes and Guides, error messages are now also shown
when loading of videos or examples fails.

Matching aliases are now separately listed in search results, just
like alternateClassNames - they also use the same icon.

Each search data record now defines its own sorting order using
the "sort" field.  The filterMembers method in turn groups the
results by full-, beginning- and middle-matches. This significantly
simplifies the search algorithm - no more is there a special handling
of aliases.

Changed search records structure around a bit:

- "type" field is now either "class" or "member".
- new "icon" field defines the icon to show.
- "id" is defined for each record and identified the search result.
  For example the id of alternateClassName record is the name of
  the original class.
- simplified the code a bit in the filterMembers method that
  performs the actual searching.

For alternateClassNames we show the subclass icon.
Should be good enough for now.

This way the hash of tagname->tag is built in one place just once.
Also no need to pass around the meta_tags array to every object
that happens to deal with meta-tags.

The list of signature attributes is also produced by this registry.

Each attribute is now defined in separate file as meta tag.

Previously some settings were directly on Docs object, others in
Docs.data - a bit messy.

List of attributes to show in signature is now kept in Class and
used by both front- and backend.

All the attributes are now in this hash. That makes possible
further refactoring of the whole attributes listing creation
in method signatures.

The required attribute is detected in a different way than other
things inside attributes hash, but it fits there nicely.

Refactor those tags along with @protected and @template into
new property 'attributes'.

Remove bunch of duplicated code.