Extract BatchRunner component, responsible for actually running the
tests.

The Index view then simply commands the BatchRunner and listens events
from it.

All this resulting in much simpler and actually even shorter code.

So we now have a --tests option and all related modules are named
tests, not doctests.

Also some refactoring of the DocTests view.

Add :type field to tell them apart.

Created Stdout class that merges arrays from multiple sources together
and then finally writes all to STDOUT.

Guides HTML is now placed inside guide hashes and can be easily accessed
from there when looping over with guides.each_item.  But when calling
the #to_array method, :html keys are filtered out, so it behaves like
before and can be placed inside Docs.data.guides.

Keeps the iframe code much simpler as it now only needs to call
the passed in callback method with true or false.  Previously it
needed to call a static method directly on InlinePreview class,
which was quite ugly.

Touch examples with "raw" option now work as intended.

- Use double-click for running single example (add help text for it).
- Change title.
- Simplify status text updating code.
- Other smaller tweaks to layout.

Created InlineExamples class that extracts examples from already
formatted code and writes them to inline-examples.js file.

The front-end now only needs to load this one file with all examples in
it.

Useful for quoting in comments.

Using this option will disable output of source files and
links to source files in UI.

Now it only contains tasks directly related to JSDuck and two
helper tasks to generate touch and ext docs from SDK.

In addition to making the member itself visible, we also make its
containing section visible if needed.

Because we're using JsonP requests the browser simply doesn't give us
any information as of why the loading of <script> tag failed - it just
says: "error".

The hierarchy <pre> element happened to get the .notpretty class
added which resulted in different margins etc.  Now avoiding that.

Also fixed the color of normal text inside it.

The CSS is supplied from Touch SDK repository.

Consequently one cannot use the old sencha command any more.

That's no more needed in ExtJS 4.1.

Class loading failure is now shown in grid.
For other failures the grid also displays the failure message.

Instead use template in column to render it.

As the Assert class was removed, this code is currently not needed.

Encapsulate interaction with grid store inside DocTests index component
by adding addExample method.