For this create a base class GroupedAsset that deals with
building the map of names.  To make the base class work, all
classes now use @groups instead of @examples/@videos/@guides
so they can be treated the same in GroupedAsset class.

The base class also has #each_item method to more easily iterate
over items in all groups.

For examples we are now also creating the "name" field into all
of its items.

With this ready, our @aside tag can start accessing guides, videos
and examples.

Assets combines: guides, videos, examples, images, welcome, categores.

This moves out bunch of logic from App class and simplifies
communication with IndexHtml and AppData which now only need to get
passed one param, instead of passing guides, videos, etc separately.

Video URL-s are now much friendlier.

When video only has an ID, turn the ID into a name (for backwards
compatibility).

Additionally I built a duplicate name checking into the processor
of videos.json, which right away discovered two duplicate videos :)

Use it for global classes Array,Date,etc and for Ext.supports.

For now this is hard-coded, but better than nothing.

Replace the .forEach with for-loop.

Didn't really measure the benefit, but maybe something goes better in
IE, as it's a heavily used loop when performing the search.

Also style them with -line-through-.

That is, don't complain when a deprecated member is missing
(this is to be expected).

An extra checkbox in show menu, just like for deprecated.

Otherwise like @deprecated, but for documenting members that have
been completely removed.

Use it correctly when generating touch docs.

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.