If you're in Design mode, any new editors will open in design mode
as well. If you're in Edit mode, new editors will open in Edit mode.

Task-number: BAUHAUS-609

This was needed since we cannot start stuff otherwise without a project

Task-number: BAUHAUS-450
Reviewed-by: kkoehne

Task-number: QTCREATORBUG-756

The QML task manager behaviour is to show warnings/errors for _saved_ files
only.

Reviewed-by: Erik Verbruggen

Since the revision of the current document doesn't change, we don't
get rid of errors due to missing dependencies otherwise.

Reviewed-by: Kai Koehne

A semantic rehighlight suffices. This should avoid some parsing cycles
introduced earlier.

Reviewed-by: Roberto Raggi

Reviewed-by: Roberto Raggi

Task-number: QTCREATORBUG-909.
Reviewed-by: Thorbjørn

Wrote down what Christian Kamm told me.

* Fill the snapshot with files that could be imported.
* Implement package imports.

* The qmldir file is not parsed yet.

Reviewed-by: Erik Verbruggen

... and switch to it in EditorManager::activateEditor.
There no longer is a need for special currentEditorChanged()
handling in the editor that use a special mode.

QmlDesigner receives an additional setting specifying the
desired edit mode. QmlJSEditor detects whether QmlDesigner
is present by checking the registered mimetypes of the
Design mode and retrieves the settings via keys.

Remove some obsolete code and clean up includes
on qmldesignerconstants.h

Reviewed-by: con

Done-with: Erik Verbruggen

Just the declaring member isn't enough.

Will be useful for improved scope chain building.

Done-with: Christian Kamm

Both for CppEditor::Internal::SemanticInfo and QmlJSEditor::Internal::
SemanticInfo.

The idea is that it may be a plugin-provided type. We don't want user
code to be riddled with error markers in that case.

Reviewed-by: Roberto Raggi

* Add SemanticHighlighter to QmlJSTextEditor to update the semantic info
  in a background thread.
* Add QmlJS::Check to run semantic checks on qml and js documents.
* Add a check for incorrect property names.
* Fix hoverhandler to show tool tips from extra selections over help
  tooltips.

It is used to evaluate expressions to values.
Done to make room for a real 'check' pass.

Fixed the insertion of matching braces when the token at the left of the cursor is a string literal.