Fixed rendering of checkbox on Linux under Qt 4.7.3 using the 'cleanview' style under GTK.
The problem is that the sizeFromContents method for that style doesn't correctly default
the last argument.

Pivotal tracker issue #29175157.
Merge pull request #63 from jasonmccampbell/50156fdc7cddd01fcecba4973f207fa29aa71775

Fixed incorrect number of arguments issue under Linux & GTK due to Qt style problem in cleanview
Raise the dialog widget to be topmost when shown
Merge pull request #72 from enthought/fix-background-window

Raise the dialog widget to be topmost when shown
Qt bindings no longer expose QStringList (both PyQt and PySide)
Merge pull request #76 from enthought/fix-str-editor-qt

Qt bindings no longer expose QStringList (both PyQt and PySide)
FIX trivial bug in tabular editor

It was visible when adding and removing  the same data item twice in succession.
FIX exception when self.ui is None and value is changed
Merge pull request #77 from pib/master

FIX exception when self.ui is None and value is changed
BUG: Using 'visible_when' with Groups can leave ugly blank space.

This affects the Qt4 backend only.
Merge pull request #78 from enthought/fix-qt-group-hiding

BUG: Using 'visible_when' with Groups can leave ugly blank space.
BUG: Allow unicode page names for the NotebookEditor
Revert "BUG: Allow unicode page names for the NotebookEditor"

Oops! Do this in a PR.

This reverts commit 237e9fb5c1f902c859a20b9397f3ab5d55287f53.
BUG: Allow unicode page names for the NotebookEditor
Merge pull request #79 from enthought/fix-unicode-page-names

BUG: Allow unicode page names for the NotebookEditor
add ref tag for CheckListEditor()
add documentation on default_traits_view()
Merge pull request #80 from timdiller/master

Add documentation for default_traits_view() method
CLN: TreeEditor: Ensures drag mimedata is always a sensible PyMimeData.
CLN: Exposing mimedata on traitsui api