The calculation of first-child seems way too complex, but at least
it works.  Should be encapsulated somewhere.

- Removed empty anchor tag - using id attribute on h3 instead.
- Replaced cryptic classname "p" with "members-title".
- Adding a differenciating ID to the parent div and using
  descendants selector to set icon for the contained h3.

This way all styles are in the same format - like in ExtJS.
Additionally my editor has support for scss syntax, but not for sass.

Created separate class for dealing with the rendering.

Link from header to source file and fix prettify library links in
source files.  Also adjusted some class names and removed needless
top-block class from the containing div.

Well... basically just moved it to sass/ directory.

In fact converted the style.styl file in old Documentation app to
SASS.  Don't really know which format it was, but almost like SASS,
with enough differences though.

Also moved images directory inside resorces/ aside sass/ dir.

Finally changed the default CSS ouput style to :compact.

Instead one is supposed to manyall add extjs/ directory inside
template/ directory.  This could also be just a symlink to ExtJS.

Instead referencing it through this.toolbar inside OverviewPanel.

Only adding the clsName property for class nodes.

Removed .htaccess file, class URL-s are now in form:

    apidocs/#/api/Ext.Ajax

To make refreshing of a page work, added .htaccess file that
directs all api-URL-s to index.html.

Currently using URL in form: some-path/api:Ext.ClassName
I would like to use: some-path/api/Ext.ClassName

But I didn't figure out how to make them work, especially so that
it could be used from a local filesystem.  When the basedir of
the app changes, you can't use relative URL-s any more.

Before we had: "cfgs", "properties", "methods", ...
Now we have: "cfg", "property", "method", ...

Although naming array of events to just "event" looks at first
glance somewhat wrong, it makes looping over all the members
much-much easier.

Showing correct member names in member menus.

Replaced uses of Array.forEach with Ext.Array.forEach and
Ext.Array.map.

Divided the complex menu building logic into methods.

JSDuck now export JSON even in normal mode (without --json option).

When class name clicked in tree, the JSON is loaded and class
documentation displayd.  Currently we only show doc-comment of
the class.

Also turned off use of history.pushState - bringing it back in the
future.

Not needed, because we don't want to follow links directly,
but instead load JSON and generate the page.

- singleClickExpand
- cls

Because JSDuck creates the whole tree structure no complex conversion
is needed on JavaScript side - we just pass the JSDuck output to
treepanel root.

Renamed CSS classes in JSDuck generated tree data.

Brought over a lot of code from the docs app.
Then refactored the JavaScript heavily:

- Replaced tabs with spaces.
- Removed commented-out code.
- Moved global functions to functions.js
- Moved initialization to init.js

This defines the location of ExtJS directory.
It will be copied or symlinked to <output-dir>/extjs

This will allow us for now to skip adding the whole Ext4
to our small jsduck repo.

Useful when developing template files, to avoid running JSDuck every
time you make a change to JavaScript file.

Using this, suppresses the creation of global class and also
suppresses the error messages related to that.

Previously only the first "." got replaced in classname.

Before: Ext-panel.Panel-cfg-baseCls
After:  Ext-panel-Panel-cfg-baseCls