Protect against session changes at startup.
Reviewed-by: hjk

We need to append "?view=split"to force the split mode check. Make the
check more readable in viewerForContextMode.

In case of split mode we did not check if the actual requested doc
exists and thus did fail to open the browser if it could not be found.

Reviewed-by: Daniel Molkentin

This is a big change touching almost all of our .pro file parsing.
With this patch we only evaluate once exact for all needs and once
greedy for the filelist. That is the qt runconfigurations don't have own
evaluaters but reuse the project wide exact evaluation.

We reevaluate if the user changes the build directory, the qmake
buildconfiguration or the qmake arguments. That is if you open src.pro
(or projects.pro) of qt with a shadow build you still don't get all the
files, but after correcting the build directory, we reevaluate the .pro
files and find all files. So for a suitable definition of fixed, that
bug is now fixed.

We now get the exact defines of all .pro files instead of all defines for all
buildconfigurations. We still don't distinguish in which
.pro file a DEFINE is set. So the code model now knows about all the
defines set for the given configuration but not for which files it is
actually set. Also that includes all DEFINES set in .qmake.cache or the
mkspecs. This means all defines from .pro files should now work.

The intial loading is still synchronous. I haven't looked into it to
deeply, but it seems possible to make it also async.There are probably a
few issues which need to be solved fist.

Also due to the asynchronous nature of the code, the executable is
updated a few seconds after actually changing the build configuration

Reviewed-by: ck

This bug manifested itself as not getting a tooltip and correct context
help for the type of the root object in a Qml file.

Do this as part of the ProjectLoadWizard

And a vague probability that it could (in the future)
save fetching the standard icon multiple times from the system.

QCompleter::popup() actually shows the popup, which is both annoying and slow.
Delay the annoyance from startup to a later point till this is fixed in
Qt.

The dependency was there for a while. No need to jump through hoops hoping
to maintain a stand-alone debugger anymore.

editor or re-used an existing one

- clearing search input focus when clicking clear icon
- re-set updated sections' models
- using GridView-based item selection
- C++ code cleanup
- Manhattan-length used for drag & drop initiation
- integrated QtCreator's filter text input
- replaced QToolButtons with a QTabBar
- fix: eliding text & corrected selector offset
- styled resources view
- updated Qml syntax

from options dialog and editor factory.