Ensure it's run before all the main export tasks.

Also run it before :sdk task.

This task is now run *before* other tasks.  So we first compress
the contents of template/ dir into template-min/ and from then on
use the template-min/ dir as our template.

To perform sencha build, I added build-js.html file that is like
template.html but contains only bare minumum of JavaScript links
that we need to build into one file.

The purpose of all this is to run the :compress before building
gem for release version of JSDuck.  For this reason we also don't
concatenate data.js with app.js, as the jsduck gem wants to generate
its own data.js.

The default value for --template option is now "template-min/",
only in development related tasks :sdk and :touch do we replace
it with "template/".

Previously when active tab was closed, the next tab got activated,
but the page associated with the tab was not loaded. Now fixed.

Reported the bug to ExtJS bug tracker.

But that's only half of it. Can't really figure out what causes
the other part of the problem.  The whole thing started with SDK
commit: 6c272018d764b5993791df7b5ad94f114733cff0

The prettify lib is used by view-source.

- Use button instead of div.cls-group - just to have one class less.
- Don't do the switching when clicking on already selected button.
  The old code contained a check for it, but it didn't work as
  selected and clicked were always different.

When type definition names a known class, it's converted to link
into that class.

Add CSS files to touch rake task.

It's not fully correct, but at least it makes the @member tag work as expected.

Also some refactoring of the other rake tasks.  live_docs task is now
renamed to live_sdk.

The --title now specifies both the <title> and the contents of the header
at the very top of docs app.  The new default is "Sencha Docs - Ext JS".

The title is no more used in classes index page.  This has now static heading
"API Documentation".  Also the guides, videos, examples index pages have
headings without "Ext JS" in them - so the headings will work also for
Touch and whatever else.

Finally the title is also used in print version.  For this did some
refactoring with writing the template files in app.rb.

Makes it possible to say "Ext.data.*" in categories file and have
all the classes included automatically, instead of listing them
all manually.

List of multiple classes can be now provided to --external option.
The Error class is now automatically included to externals list.

Stuff like: "Some string\
continues here".

It's rarely used, but I encountered it in some Jasmine tests.

Class tree bugfix

The number of static tabs now depends on if --welcome, --guides,
--videos and/or --examples options were specified.  Only the classes
tab is always on.

Also remove the <tpl> tag... leftover from JS version.

comment-to-markdown formatting has to be done after writing source files,
because doing the formatting in parallel breaks links between doc-objects
and source files.

Again makes things quite a bit faster as we don't write as big files.

Created ClassFormatter for doing this.

This speeds things up about 2x.

Remove code for using phantomjs entirely.