* Fix all warnings about non-explicit constructors except for those
   in 3rdparty code.

Task-number: QTCREATORBUG-2158
Reviewed-by: hjk

... by introducing signal ICore::showNewItemsDialog().

Reviewed-by: Kai Köhne <kai.koehne@nokia.com>

Now that Contexts are cached, it needs to be copyable. However, the
ScopeChain has a QmlComponentChain member that owns resources and didn't
have a correct copy constructor or copy assignment operator.

I've made QmlComponentChain non-copyable and store a shared pointer to
an instance instead, as it will generally not change for a given
context.

Reviewed-by: Lasse Holmstedt

Task-number: QTCREATORBUG-2071

Unloading a project must always remove the configuration widgets, since
otherwise they might be accessed after the project was deleted. So
remove them even if we have no other project widget to show.

Reviewed-By: Tobias Hunger

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

The scriptconsole layout come from the old qmlinspector

http://bugreports.qt.nokia.com/browse/QTCREATORBUG-2126

Right-clicking on an item in qml observer presents a context menu as
before, but instead of just selecting the item, the user enters its
context if it's possible.

Task-number: QTCREATORBUG-2123 QTCREATORBUG-2122

It was not very useful without being able to e.g. move things around.

 * Make information raised by Qt assert clickable.

Task-number: QTCREATORBUG-2175
Reviewed-by: Olivier Goffart

    Task-number: QTCREATORBUG-2136
    (ported from commit 02c331e0)

Skip tasks withtou file information in build issue view when going
back/forward.

This plugin enables loading of .tasks files into the Build Isssue list. This
is really nice if you need to e.g. browse results from static codecheckers
in creator.

Tasks files are simple tab-separated lists of one of the following forms:
description
type\tdesciption
file\ttype\description
file\tline\ttype\tdescription

The strings may contain escape codes:
\n for newline,
\t for tab
and \\ for a backslash

Make GitClient::synchronousGit use the process environment.

Windows: Add a setting to fake a 'HOME' environment variable
(%HOMEDRIVE%%HOMEPATH%) to make msysgit look for its SSH-keys
there not only when run from git bash, but also from Qt Creator.
Useful in MinGw-setups, where git must not be in the path.

updateUses() is already called after each text change.

http://bugreports.qt.nokia.com/browse/QTCREATORBUG-2144

We have no way to know when the client is actually opening its ports,
so we wait until we are reasonably sure it's done.
This is not 100% safe, but should generally suffice.
(The UTFS server seems to have this logic already built in, but it does
not seem to work on Mac.)

This will help us diagnose errors.