Fix README, some spelling errors, remove contractions,
exclamation marks, correct some plural forms, join split messages.
Add QCoreApplication::translate to non-Q_OBJECT-classes.
Fix some lupdate warnings about discarding meta-data (//:).

Reviewed-by: Alessandro Portale

Reviewed-by: Alessandro Portale

Reviewed-by: Alessandro Portale

Reviewed-by: dt <qtc-committer@nokia.com>

- Removed the "cpp/" dir
- Moved main.cpp and symbianicon.svg next to the main .pro.
  This also reduces the dir depth in the project view.
- Introduced "qmlapplicationviewer/" dir, which will contain the files
  which the user should not modify. All the files there have the base
  name "qmlapplicationviewer"
- Moved/renamed "qmlapplication.pri" to
  "qmlapplicationviewer/qmlapplicationviewer.pri"

The intended meaning is to toggle the DebugBuild flag, so the & was too much

Reviewed-by: Tobias Hunger

 * Default to the type used to create the makefile when importing
 * Default to the default type of the Qt version otherwise

 * Add test for build- and sourcedirectories being at different levels

Reviewed-by: dt

Task-number: QTCREATORBUG-2003

Task-number: QTCREATORBUG-1876

 * Report what kind of build we have in the tooltip
 * Create only debug/release configuration for debug/release
   configured directories
 * Create debug and release configuraions for debug_and_release
   configured directories
 * Add debug_and_release to options in QMakeStep UI
 * Do not add CONFIG+=debug/release to CONFIG+=debug_and_release builds

... for doxygen. Change logic for known empty keywords to be replaced
by an empty string.

Task-number: QTCREATORBUG-1854

Task-number: QTCREATORBUG-1290

 * Doubleclicking the directory in the targetsetuppage now
   switches between shadowbuilding (default) and in source
   building. Not very obvious, but then we do want to
   encourage people to use shadowbuilding.

Task-number: QTCREATORBUG-1668

 * Fix displayed shadow build location
 * Fix shadow build location used by newly set up shadow builds

Task-number: QTCREATORBUG-1599
Reviewed-by: dt
(cherry picked from commit 1d8e1760)

 * Fix displayed shadow build location
 * Fix shadow build location used by newly set up shadow builds

Task-number: QTCREATORBUG-1599
Reviewed-by: dt

Attach icons to TaskModel.
Reviewed-by: Daniel Molkentin <daniel.molkentin@nokia.com>

Reviewed-by: ossi

Reviewed-by: Leena Miettinen