Reviewed-by: kh1

Reviewed-by: Leena Miettinen

Wire QDesignerIntegration's help signal to help manager.

Task-number: QTCREATORBUG-1505
Reviewed-by: kh <qtc-committer@nokia.com>

Reviewed-by: ossi

When changing the language, the sidebar items would break because
their localized window titles were used for storing the settings. Now,
id's are used.

Reviewed-by: con

Discussed-with: hjk

* Make sure we only change our own urls inside that function
* QDesktopService::setUrlHandler expects the target slot to take a QUrl

Reviewed-by: ck

Reviewed-by: ck

Make the check more generic, to also work for all other Qt namespaces
than qt.ver.s.ion. Still there's something broken in Qt webkit or so.

Reviewed-by: ck

Fixes the broken topic chooser and keyword resolving.

Reviewed-by: ck

Reviewed-by: kh

In the GTK style the scroll bar likes to be outside of the scroll area
frame. Like with the completion widget, we put the visible frame
explicitly outside of the scroll bar.

Reviewed-by: Jens Bache-Wiig

Also put it at the top, since it looks better there with the icon.

It looks wrong when a shadow is added, which a lot of window managers do
these days. Whether is looks better when no shadow is added by the
window manager is debatable.

Reviewed-by: Jens Bache-Wiig

Also removed a superfluous elide mode setter.

Reviewed-by: kh1

Reviewed-by: ck

Make Thorbjorn happy.  :)

Reviewed-by: ck

Font stuff is now handled completely inside the help viewer class.

Reviewed-by: ck

Reviewed-by: Leena Miettinen

The links have been taken before from the model, now we need to get
them out of the help files, since the help eninge core does not provide
(yet) such functionality. Also return a sensible amount of hits for the
first character, limited for now to 300 for speed reasons.

Reviewed-by: ck

To make the addition of the qml docs more prominent, make the content
item the default one as it shows all available documentation sets.

Task-number: QTCREATORBUG-1024
Reviewed-by: kkoehne

Both implementations are now split into two source files, based on the
base class type. They share also a commen implementation, but the class
interface looks now clean to the outside. Adopt other classes for use.

Since we use a two column model/treeview we need to prevent returning
some text data, otherwise we will see dots in the secound column. We also
need to emit pagesChanged once we init the model.

Based on the implementation done by ck, slightly modified and thus put
under the private help internal namespace.