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

Task-number: QTCREATORBUG-2074

Task-number: QTCREATORBUG-347
Reviewed-by: ck

Task-number: QTCREATORBUG-2130

Reviewed-by: ck

in qglobal.h, we make Q_UNUSED call a template function that takes T&
as a parameter. So we can't pass an rvalue (the result of the &&
operator).

Reviewed-By: Trust Me

Reviewed-by: ck

Reviewed-by: ck

One shall check the event is a QKeyEvent before static_cast

Using more *::Constants::ICON_* where it makes sense and
wrapping the file names into QLatin1String where they were
missing.

The increased usage of the ICON constants needed a few more
cross plugin includes of *constants.h, here and there.
I think that it is OK, since the dependencies were alredy there
icon resource wise.

Task-number: QTCREATORBUG-1964
Reviewed-by: kh

Task-number: QTCREATORBUG-1473

Reviewed-by: ck

The search for remote content, like stl::vector in cpp-reference,
google, bing, wikipedia etc...

Task-number: QTCREATORBUG-1375
Reviewed-by: ck

For later use in IFindFilter.

Reviewed-by: ck

Reviewed-by: ck

Also show "Replace", "Replace & Find" and "Replace All" in the tool bar,
i.e. don't show the "Replace & Find Previous" in the tool bar to avoid
it getting crowded.

Reviewed-by: Thorbjørn Lindeijer