Doc: Edited "User Interfaces" topic.

-created a link to the QML Application Developer Resources page
-clarified that Qt Quick is a library of QML types

Change-Id: I0552d96949bc86485fdf340e0dbc154144e72dc7
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Doc: Various changes to the platform related documentation.

-Removed "Cross-Platform and Platform-Specific Development" page.
 Our overviews are presumed to be cross-platform and the platform
 specific content are in the respective platform pages. The page adds
 no value to our doc architecture.

-Removed group "platform-specific" group. It is not necessary as
 the platform pages already contains a link to their specific issues.
 I dispersed some of the links so then they are accessible from
 the platform pages.

Change-Id: I1d7eef83b8d5f1dc5af7d4c61833875da636cc39
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
Doc: Whitespace fix.

Change-Id: Ie088da27231c41a43f57f681723c80d07960b331
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Removed the duplicate content

Replaced Qt Creator configuration information with
a link to the Qt Creator manual section that outlines
the steps.

Change-Id: Ida5b064544906297e7a27ff37328eae0b78ddf25
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Doc: Removed "qml-features" group and list of links.

-Replaced by "QML Application Developer Resources" and the various
overviews in Qt Quick and Qt QML. This page was not used anyway.
-Pages from outside of qtdoc also needs to have the group membership
 removed.

Change-Id: I63e64fbf55d2359ca2f9602c93ecc32c2f35e07e
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Doc: Quick language edit of Getting Started with QML tutorial.

-"element" to "type" or "object" and created links to appropriate
documentation to explain the difference.
-added additional links to the QML reference pages.

Change-Id: I877014a76a2e127dd3a9ff00f818b6477911f3e3
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>
Doc: Removed "SQL in Qt" group page.

-This information is already in the Qt SQL and "Data Storage" pages.

Change-Id: I46125889d33c4d404f2f6db4c56c3d26d68ee9a3
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Doc: Edited list of UI topics in the User Interface page.

-list should be the same as the one from the QML Application Developer
Resources page.
-the use case pages are a better fit than the concept pages because
they cover more than just Qt Quick.

Change-Id: Icb09349cc1490fa0b5157c9983d09baae55d9a68
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Separated "modules" group page from the "All Modules" page.

-they are separate and causes auto generated links to show up.
-we already have a "modules-cpp" group, so "modules" is no longer needed.
 If "modules" group is to be removed, it should be in a separate patch.

Change-Id: Ia74a945455f2765ace32dec798de45fb42b2d1d5
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Added a note about manually selecting the Qt libraries

The Qt 5.1.0 installer by default installs only the desktop
version of the libraries. The user will have to manually
select the libraries for Android x86 and ARMv7, which is
not obvious in the installer.

Change-Id: I77b11cd4ca7069e4ce90fd77d8167ee0c0141320
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Doc: Remove PostScript print support

PostScript support was removed back in 2011, but not documented then:
34f712e79e97b757b4426e1ffa09e065c9e379a1 (qtbase.git)

Change-Id: I1416966d36793abb0c0135586531cd76867a2bb0
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Doc: Add Qt Quick Layouts to the list of essential modules

Change-Id: I5c06aa2970c289d02e3f40869440f19227eb2f84
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Doc: Cleaned up QML introduction.

-Combined QML "Quick Start" pages into "First Steps with QML" so that
we only have 1 piece of QML introduction
-Placed the QML links to QML in the "What is QML?" section.

We have too many information in too many places and this patch means
we have a better documentation focus and we can direct readers depending
on their familiarity with QML.
A)first step
B)qml reference
C)qml application

Change-Id: I0256f81fea95a55a447776f1cd11764cda656f4d
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>
Doc: Cleaned up information about SQL support.

-the list in the "Data Storage" is not aware that the items in the
 list are chapters in "SQL Programming" guide.
-removed extra list items to better give directions to readers.

Change-Id: I003132ea1038010e03aca0970d9683437b900e16
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Nico Vertriest <nico.vertriest@digia.com>
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>