The Parentheses, TextBlockUserData and TextEditDocumentLayout classes
and their member function implementations were spread around the
BaseTextEditor class. Moving them to their own file to make the code a
bit better organized.

Reviewed-by: mae

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

They had not yet been updated to the new way of importing javascript.

Reviewed-by: Erik Verbruggen

Task-number: QTCREATORBUG-756

Remove all hacks/conventions of considering the last generated
file as project file, etc. and instead add attributes flags to
Core::GeneratedFile, giving fine-grained control of what to do
with the file. Implement static utility functions in wizards
that handle it. Add boolean XML-attributes "openeditor"/"openproject"
to the file elements used by the CustomWizard XML-specification.
Manually set the attributes in all wizards.

Task-number: QTCREATORBUG-1166

Reviewed-by: kkoehne

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

Reviewed-by: Erik Verbruggen

Reviewed-by: Roberto Raggi

Reviewed-by: mae

Reviewed-by: Thomas Hartmann

The fake tooltip duplication is not nice.

Fixes 4f1d5ce1

Task-number: QTCREATORBUG-893
Reviewed-by: Erik Verbruggen

Reviewed-by: Erik Verbruggen

Reviewed-by: Erik Verbruggen

* Add 'on' qml-keyword.
* Highlight the last identifier before 'on' as a type.

Task-number: QTCREATORBUG-893
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

Reviewed-by: ckamm

Previously we just scanned every directory containing a qml file for
other qml files.

This makes import ".." work.

Reviewed-by: Erik Verbruggen

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

Reviewed-by: Roberto Raggi

Qt Quick Designer.

Reviewed-by: Roberto Raggi

Should have been part of 9aaf2ec8

Reviewed-by: dt
Reviewed: erikv, con

from text editor.

Fixed colors to use the same as refactoring rename, and a few
fixes for undo and document changes outside the tab areas.

Reviewed-by: Roberto Raggi

Automagically hide the completion box when the text under cursor matches the only item in the completion box.

Task-number: QTCREATORBUG-919
Reviewed-by: Roberto Raggi

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