This time implement it without a hacky access to parent component.

When search directs to specific member that happens to be hidden
we now first show and expand it, and only after that scroll to it.
Expanding it first allows us to scroll it more correctly especially
in case when dealing with members at the very end of the page that
would otherwise be halfway hidden at the bottom.

Previously tabs for private classes didn't open when they were hidden in tree.
Now each tree has two separate methods:

- getNodeByUrl - to geth the actual node.
- getRecordByUrl - to get the data (which in case of classtree also searches within
  hidden classes).

To support this, both logic classes return list of private nodes in addition to
the root node.

Add checkbox to "show" menu to toggle them on/off.

This way more members will fit into menus.

Also make linge-height of all the members in menu the same.

Use if statements with curlies like in everywhere else.

Additionally fix missing this parameter.

Previously statics were at the end, which made it seemingly look like
the menu wasn't correctly sorted.

The good thing was that the menu ordering matched the page ordering,
but whether it really mattered, remains to be seen when people start
to complain about this change.

For now I'm opting for the simpler code and uniformity of ordering
required/optional and instance/static.

Just like with static/instance methods.

Also use <ol> instead of <ul>.

Because the icon isn't explained anywhere, it might not be immediately apparent
that a class is singleton.

For now using subclass icon for both.

The menus now only contain links to members.

Also remove code dealing with close buttons in menus, which hasn't been
needed for quite a while.

In the process of making source files saving faster, the case-insensitivity
requirement was forgotten.

Basically when seeing "widget.foo.bar" treat it as widget: foo.bar
not as widget.foo: bar.

A corner case that wasn't taken care of.

Removing incorrect docs from @evented tag

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.